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Современные проблемы металловедения по группам марок сталей. Учебное пособие

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ɂȼɑɭɦɚɧɨɜ ɆȺɆɚɬɜɟɟɜɚ
ɋɈȼɊȿɆȿɇɇɕȿɉɊɈȻɅȿɆɕ
ɆȿɌȺɅɅɈȼȿȾȿɇɂə
ɉɈȽɊɍɉɉȺɆɆȺɊɈɄɋɌȺɅȿɃ
ȾɨɩɭɳɟɧɨɎɟɞɟɪɚɥɶɧɵɦɭɱɟɛɧɨɦɟɬɨɞɢɱɟɫɤɢɦɨɛɴɟɞɢɧɟɧɢɟɦ
ɩɨɭɤɪɭɩɧɟɧɧɨɣɝɪɭɩɩɟɫɩɟɰɢɚɥɶɧɨɫɬɟɣɢɧɚɩɪɚɜɥɟɧɢɣ
©Ɍɟɯɧɨɥɨɝɢɢɦɚɬɟɪɢɚɥɨɜªɜɤɚɱɟɫɬɜɟɭɱɟɛɧɨɝɨɩɨɫɨɛɢɹ
ɩɪɢɩɨɞɝɨɬɨɜɤɟɛɚɤɚɥɚɜɪɨɜɢɦɚɝɢɫɬɪɨɜɨɛɭɱɚɸɳɢɯɫɹ
Ɇɨɫɤɜɚȼɨɥɨɝɞɚ
©ɂɧɮɪɚɂɧɠɟɧɟɪɢɹª
2024
УДК 669.017.3 ББК 34.3 Ч-90
Рецензенты:
д. т. н., профессор (Федеральное государственное бюджетное
образовательное учреждение высшего образования «Магнитогорский
государственный технический университет им. Г. Н. Носова»)
Чукин Михаил Витальевич;
д. т. н., профессор, зав. каф. металлургии железа и сплавов (Федеральное государственное автономное образовательное учреждение высшего образования «Уральский федеральный
университет имени первого Президента России Б. Н. Ельцина»)
Шешуков Олег Юрьевич
Чуманов, И. В.
Ч-90 Современные проблемы металловедения по группам марок
сталей : учебное пособие / И. В. Чуманов, М. А. Матвеева. – Москва ; Вологда : Инфра-Инженерия, 2024. – 152 с. : ил., табл. ISBN 978-5-9729-2046-4
Рассматриваются коррозионностойкие (нержавеющие) стали и сплавы, конструкционные и инструментальные стали. Показа­ны актуальные проблемы производства сталей с повышенной об­рабатываемостью резанием.
Для студентов очного и очно-заочного обучения направления подготовки 22.04.02 «Металлургия». Может использоваться для выполнения семестрового задания по предметам «Общее матери­аловедение», «Материаловедение. Технология конструкционных материалов», «Термическая обработка металлов».
УДК 669.017.3 ББК 34.3
ISBN 978-5-9729-2046-4 © Чуманов И. В., Матвеева М. А., 2024 © Издательство «Инфра-Инженерия», 2024 © Оформление. Издательство «Инфра-Инженерия», 2024
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ȼɜɟɞɟɧɢɟ
ɄɈɊɊɈɁɂɈɇɇɈɋɌɈɃɄɂȿɇȿɊɀȺȼȿɘɓɂȿɋɌȺɅɂ ɂɋɉɅȺȼɕ
Ʉɥɚɫɫɢɮɢɤɚɰɢɹ Ɂɚɪɭɛɟɠɧɵɟɚɧɚɥɨɝɢ ȼɥɢɹɧɢɟɥɟɝɢɪɭɸɳɢɯɷɥɟɦɟɧɬɨɜɧɚɫɜɨɣɫɬɜɚ ɤɨɪɪɨɡɢɨɧɨɫɬɨɣɤɢɯɫɬɚɥɟɣɢɫɩɥɚɜɨɜ ɗɤɨɧɨɦɢɱɟɫɤɚɹɰɟɥɟɫɨɨɛɪɚɡɧɨɫɬɶɢɫɩɨɥɶɡɨɜɚɧɢɹ ɥɟɝɢɪɭɸɳɢɯɷɥɟɦɟɧɬɨɜ ɉɪɨɢɡɜɨɞɫɬɜɨɧɟɪɠɚɜɟɸɳɟɣɫɬɚɥɢɢɫɩɥɚɜɨɜ22
ɋɩɨɫɨɛɵɜɵɩɥɚɜɤɢɢɪɚɡɥɢɜɤɢɫɬɚɥɢ Ɉɫɨɛɟɧɧɨɫɬɢɬɟɪɦɢɱɟɫɤɨɣɨɛɪɚɛɨɬɤɢɫɬɚɥɢ Ⱥɤɬɭɚɥɶɧɵɟɩɪɨɛɥɟɦɵɩɪɨɢɡɜɨɞɫɬɜɚ
ɉɟɪɫɩɟɤɬɢɜɧɵɟɫɮɟɪɵɩɪɢɦɟɧɟɧɢɹɫɬɚɥɢ ɍɫɥɨɜɢɹɢɫɩɨɥɶɡɨɜɚɧɢɹɫɬɚɥɟɣɢɫɩɥɚɜɨɜɜɧɟɮɬɟɝɚɡɨɜɨɦ ɤɨɦɩɥɟɤɫɟ44 Ʉɨɧɬɪɨɥɶɧɵɟɜɨɩɪɨɫɵ
ɄɈɇɋɌɊɍɄɐɂɈɇɇɕȿɋɌȺɅɂ
Ʉɥɚɫɫɢɮɢɤɚɰɢɹ Ɂɚɪɭɛɟɠɧɵɟɚɧɚɥɨɝɢ ȼɥɢɹɧɢɟɥɟɝɢɪɭɸɳɢɯɷɥɟɦɟɧɬɨɜɧɚɫɜɨɣɫɬɜɚ ɤɨɧɫɬɪɭɤɰɢɨɧɧɵɯɫɬɚɥɟɣ ɉɪɨɢɡɜɨɞɫɬɜɨɤɨɧɫɬɪɭɤɰɢɨɧɧɵɯɦɚɪɨɤɫɬɚɥɢ
ɋɩɨɫɨɛɵɜɵɩɥɚɜɤɢɢɪɚɡɥɢɜɤɢɫɬɚɥɢ Ɉɫɨɛɟɧɧɨɫɬɢɬɟɪɦɢɱɟɫɤɨɣɨɛɪɚɛɨɬɤɢ Ⱥɤɬɭɚɥɶɧɵɟɩɪɨɛɥɟɦɵɩɪɨɢɡɜɨɞɫɬɜɚ
ɉɟɪɫɩɟɤɬɢɜɵɩɪɢɦɟɧɟɧɢɹɤɨɧɫɬɪɭɤɰɢɨɧɧɵɯɫɬɪɨɢɬɟɥɶɧɵɯ ɦɚɪɨɤɩɪɢɜɨɡɜɟɞɟɧɢɢɦɨɫɬɨɜɵɯɫɨɨɪɭɠɟɧɢɣ Ʉɨɧɬɪɨɥɶɧɵɟɜɨɩɪɨɫɵ
ɂɇɋɌɊɍɆȿɇɌȺɅɖɇɕȿɋɌȺɅɂ
Ʉɥɚɫɫɢɮɢɤɚɰɢɹ Ɂɚɪɭɛɟɠɧɵɟɚɧɚɥɨɝɢ ȼɥɢɹɧɢɟɥɟɝɢɪɭɸɳɢɯɤɨɦɩɨɧɟɧɬɨɜ ɉɪɨɢɡɜɨɞɫɬɜɨɢɧɫɬɪɭɦɟɧɬɚɥɶɧɵɯɫɬɚɥɟɣɢɫɩɥɚɜɨɜ
ɋɩɨɫɨɛɵɜɵɩɥɚɜɤɢɢɪɚɡɥɢɜɤɢ Ɉɫɨɛɟɧɧɨɫɬɢɬɟɪɦɢɱɟɫɤɨɣɨɛɪɚɛɨɬɤɢ Ⱥɤɬɭɚɥɶɧɵɟɩɪɨɛɥɟɦɵɩɪɨɢɡɜɨɞɫɬɜɚ
ɉɟɪɫɩɟɤɬɢɜɧɵɟɫɮɟɪɵɪɚɡɜɢɬɢɹɢɧɫɬɪɭɦɟɧɬɚɥɶɧɵɯɫɬɚɥɟɣ ɢɫɩɥɚɜɨɜɌɜɺɪɞɵɟɫɩɥɚɜɵ Ʉɨɧɬɪɨɥɶɧɵɟɜɨɩɪɨɫɵ
ɋɌȺɅɂɋɉɈȼɕɒȿɇɇɈɃɈȻɊȺȻȺɌɕȼȺȿɆɈɋɌɖɘ ɊȿɁȺɇɂȿɆ
Ʉɥɚɫɫɢɮɢɤɚɰɢɹ Ɂɚɪɭɛɟɠɧɵɟɚɧɚɥɨɝɢ ȼɥɢɹɧɢɟɥɟɝɢɪɭɸɳɢɯɷɥɟɦɟɧɬɨɜɧɚɫɜɨɣɫɬɜɚɫɬɚɥɟɣ ɫɩɨɜɵɲɟɧɧɨɣɨɛɪɚɛɚɬɵɜɚɟɦɨɫɬɶɸɪɟɡɚɧɢɟɦ ɉɪɨɢɡɜɨɞɫɬɜɨɫɬɚɥɟɣɫɩɨɜɵɲɟɧɧɨɣɨɛɪɚɛɚɬɵɜɚɟɦɨɫɬɶɸ ɪɟɡɚɧɢɟɦ
ɋɩɨɫɨɛɵɜɵɩɥɚɜɤɢɢɪɚɡɥɢɜɤɢ Ɉɫɨɛɟɧɧɨɫɬɢɬɟɪɦɢɱɟɫɤɨɣɨɛɪɚɛɨɬɤɢ Ⱥɤɬɭɚɥɶɧɵɟɩɪɨɛɥɟɦɵɩɪɨɢɡɜɨɞɫɬɜɚ
ɉɟɪɫɩɟɤɬɢɜɵɪɚɡɜɢɬɢɹɫɩɨɫɨɛɨɜɩɨɜɵɲɟɧɢɹ ɨɛɪɚɛɚɬɵɜɚɟɦɨɫɬɢɪɟɡɚɧɢɟɦ Ʉɨɧɬɪɨɥɶɧɵɟɜɨɩɪɨɫɵ
ɋɥɨɜɚɪɶɬɟɪɦɢɧɨɜ Ȼɢɛɥɢɨɝɪɚɮɢɱɟɫɤɢɣɫɩɢɫɨɤ ɉɪɢɥɨɠɟɧɢɟɊɚɫɲɢɮɪɨɜɤɚɦɚɪɨɤɫɬɚɥɟɣ
ȼɜɟɞɟɧɢɟ
ɇɚɩɪɨɬɹɠɟɧɢɢɜɫɟɣɢɫɬɨɪɢɢɦɟɬɚɥɥɭɪɝɢɢɩɟɪɟɞɦɟɬɚɥɥɭɪɝɚɦɢ ɫɬɨɢɬɡɚɞɚɱɚɭɥɭɱɲɟɧɢɹɤɚɱɟɫɬɜɚɦɟɬɚɥɥɚɢɩɪɟɠɞɟɜɫɟɝɨɩɨɥɭɱɟ ɧɢɹɦɟɬɚɥɥɚ ɧɟɫɨɞɟɪɠɚɳɟɝɨɜɪɟɞɧɵɯɩɪɢɦɟɫɟɣɫɟɪɵɮɨɫɮɨɪɚ ɝɚɡɨɜɩɪɢɦɟɫɟɣɰɜɟɬɧɵɯ ɦɟɬɚɥɥɨɜɧɟɦɟɬɚɥɥɢɱɟɫɤɢɯɜɤɥɸɱɟɧɢɣ ɢɬɩɢɫɧɟɨɛɯɨɞɢɦɨɣɫɬɪɭɤɬɭɪɨɣ
ɉɨɫɬɨɹɧɧɨɜɨɡɪɚɫɬɚɸɳɢɟɬɪɟɛɨɜɚɧɢɹ ɤɦɚɬɟɪɢɚɥɚɦɜɨɜɫɟɯ ɨɬ ɪɚɫɥɹɯɩɪɨɦɵɲɥɟɧɧɨɫɬɢɬɚɤɢɯɤɚɤɫɬɪɨɢɬɟɥɶɫɬɜɨɞɨɛɵɜɚɸɳɚɹɩɪɨ ɦɵɲɥɟɧɧɨɫɬɶɦɚɲɢɧɨɫɬɪɨɟɧɢɟɢɪɹɞɚɞɪɭɝɢɯɜɨɦɧɨɝɨɦɨɩɪɟɞɟɥɹɟɬɫɹ ɫɨɫɬɨɹɧɢɟɦɢɬɟɯɧɢɱɟɫɤɢɦɭɪɨɜɧɟɦɩɪɨɢɡɜɨɞɫɬɜɚɥɟɝɢɪɨɜɚɧɧɵɯɫɬɚ ɥɟɣɢɫɩɥɚɜɨɜɫɩɨɫɨɛɧɵɯɪɚɛɨɬɚɬɶɜɫɚɦɵɯɪɚɡɧɨɨɛɪɚɡɧɵɯɭɫɥɨɜɢɹɯ
Ɋɟɲɟɧɢɟɷɬɢɯɡɚɞɚɱɩɨɬɪɟɛɨɜɚɥɨɜɨɩɟɪɜɵɯɤɨɧɤɪɟɬɧɨɝɨ ɭɥɭɱɲɟɧɢɹɤɚɱɟɫɬɜɚɩɪɨɢɡɜɨɞɢɦɵɯ ɫɬɚɥɟɣɢɫɩɥɚɜɨɜɢ ɜɨɜɬɨ ɪɵɯɫɨɡɞɚɧɢɹɧɨɜɵɯɦɚɬɟɪɢɚɥɨɜȼɞɚɧɧɨɦɭɱɟɛɧɨɦɩɨɫɨɛɢɢɪɚɫ ɫɦɚɬɪɢɜɚɸɬɫɹɫɨɜɪɟɦɟɧɧɵɟɩɪɨɛɥɟɦɵɦɟɬɚɥɥɨɜɟɞɟɧɢɹɩɨɤɨɪɪɨ ɡɢɨɧɧɨɫɬɨɣɤɢɦɤɨɧɫɬɪɭɤɰɢɨɧɧɵɦɢɧɫɬɪɭɦɟɧɬɚɥɶɧɵɦ ɦɚɪɤɚɦ ɫɬɚɥɢɢɫɬɚɥɢɫɩɨɜɵɲɟɧɧɨɣɨɛɪɚɛɚɬɵɜɚɟɦɨɫɬɶɸɪɟɡɚɧɢɟɦ
Ɉɫɧɨɜɧɚɹɡɚɞɚɱɚɤɭɪɫɚ ©ɋɨɜɪɟɦɟɧɧɵɟɩɪɨɛɥɟɦɵɦɟɬɚɥɥɨɜɟɞɟ ɧɢɹɩɨɝɪɭɩɩɚɦ ɫɬɚɥɟɣª±ɢɡɭɱɟɧɢɟɫɜɨɣɫɬɜ ɢ ɧɚɡɧɚɱɟɧɢɹɫɩɟɰɢɚɥɶ ɧɵɯɫɬɚɥɟɣɚɬɚɤɠɟɪɚɫɫɦɨɬɪɟɧɢɟɨɫɧɨɜɧɵɯɬɟɯɧɨɥɨɝɢɣɢɯɩɨɥɭɱɟɧɢɹ
Ɉɫɜɨɟɧɢɟɦɚɬɟɪɢɚɥɚɭɱɟɛɧɨɝɨ ɩɨɫɨɛɢɹɩɨɦɨɠɟɬɫɮɨɪɦɢɪɨ ɜɚɬɶɭɫɬɭɞɟɧɬɚɫɥɟɞɭɸɳɢɟɤɨɦɩɟɬɟɧɰɢɢ
— ɨɫɭɳɟɫɬɜɥɹɬɶɤɪɢɬɢɱɟɫɤɢɣɚɧɚɥɢɡ ɩɪɨɛɥɟɦɧɵɯɫɢɬɭɚɰɢɣ
ɧɚɨɫɧɨɜɟɫɢɫɬɟɦɧɨɝɨ ɩɨɞɯɨɞɚɜɵɪɚɛɚɬɵɜɚɬɶɫɬɪɚɬɟɝɢɸ ɞɟɣɫɬɜɢɹɍɄ
— ɪɟɲɚɬɶɩɪɨɢɡɜɨɞɫɬɜɟɧɧɵɟɢɢɫɫɥɟɞɨɜɚɬɟɥɶɫɤɢɟɡɚɞɚɱɢɧɚɨɫɧɨ
ɜɟɮɭɧɞɚɦɟɧɬɚɥɶɧɵɯɡɧɚɧɢɣɜɨɛɥɚɫɬɢɦɟɬɚɥɥɭɪɝɢɢɈɉɄ
— ɭɱɚɫɬɜɨɜɚɬɶɜɭɩɪɚɜɥɟɧɢɢɩɪɨɮɟɫɫɢɨɧɚɥɶɧɨɣɞɟɹɬɟɥɶɧɨɫɬɶɸ
ɢɫɩɨɥɶɡɭɹɡɧɚɧɢɹɜɨɛɥɚɫɬɢɦɟɧɟɞɠɦɟɧɬɚɤɚɱɟɫɬɜɚɈɉɄ
— ɧɚɯɨɞɢɬɶɢɩɟɪɟɪɚɛɚɬɵɜɚɬɶɢɧɮɨɪɦɚɰɢɸɬɪɟɛɭɟɦɭɸɞɥɹ
ɩɪɢɧɹɬɢɹɪɟɲɟɧɢɣɜɧɚɭɱɧɵɯɢɫɫɥɟɞɨɜɚɧɢɹɯɢɜɩɪɚɤɬɢ ɱɟɫɤɨɣɬɟɯɧɢɱɟɫɤɨɣɞɟɹɬɟɥɶɧɨɫɬɢɈɉɄ
— ɨɰɟɧɢɜɚɬɶɪɟɡɭɥɶɬɚɬɵɧɚɭɱɧɨɬɟɯɧɢɱɟɫɤɢɯɪɚɡɪɚɛɨɬɨɤɧɚ
ɭɱɧɵɯɢɫɫɥɟɞɨɜɚɧɢɣɢ ɨɛɨɫɧɨɜɵɜɚɬɶɫɜɨɣɜɵɛɨɪɫɢɫɬɟ ɦɚɬɢɡɢɪɭɹɢɨɛɨɛɳɚɹɞɨɫɬɢɠɟɧɢɹɜɨɬɪɚɫɥɢɦɟɬɚɥɥɭɪɝɢɢ ɢɫɦɟɠɧɵɯɨɛɥɚɫɬɹɯɈɉɄ
ɄɈɊɊɈɁɂɈɇɇɈɋɌɈɃɄɂȿ
ɇȿɊɀȺȼȿɘɓɂȿɋɌȺɅɂ
ɂɋɉɅȺȼɕ
Ʉɥɚɫɫɢɮɢɤɚɰɢɹ
ɇɟɫɦɨɬɪɹɧɚɛɨɥɶɲɨɟɪɚɡɧɨɨɛɪɚɡɢɟɦɚɪɨɤɧɟɪɠɚɜɟɸɳɟɣɫɬɚɥɢ ɦɧɨɝɢɟɢɡɧɢɯɢɦɟɸɬɫɭɝɭɛɨɫɩɟɰɢɮɢɱɟɫɤɨɟɩɪɢɦɟɧɟɧɢɟɚɦɚɫɫɨ ɜɵɦɫɩɪɨɫɨɦɩɨɥɶɡɭɟɬɫɹɨɬɧɨɫɢɬɟɥɶɧɨɧɟɛɨɥɶɲɨɣɫɨɪɬɚɦɟɧɬȼɫɟ ɧɟɪɠɚɜɟɸɳɢɟɫɬɚɥɢɤɥɚɫɫɢɮɢɰɢɪɭɸɬɫɹ ɩɨɝɪɭɩɩɚɦɜɡɚɜɢɫɢɦɨ ɫɬɢɨɬɫɜɨɢɯɫɜɨɣɫɬɜɯɢɦɢɱɟɫɤɨɝɨɫɨɫɬɚɜɚɢɦɢɤɪɨɫɬɪɭɤɬɭɪɵ>@
ɉɨɫɜɨɣɫɬɜɚɦɫɬɚɥɢɢɫɩɥɚɜɵɩɨɞɪɚɡɞɟɥɹɸɬɧɚɝɪɭɩɩɵ
,±ɤɨɪɪɨɡɢɨɧɧɨɫɬɨɣɤɢɟɧɟɪɠɚɜɟɸɳɢɟɫɬɚɥɢɢɫɩɥɚɜɵɨɛɥɚ ɞɚɸɳɢɟɫɬɨɣɤɨɫɬɶɸɩɪɨɬɢɜɷɥɟɤɬɪɨɯɢɦɢɱɟɫɤɨɣɢɯɢɦɢɱɟɫɤɨɣɤɨɪ ɪɨɡɢɢɚɬɦɨɫɮɟɪɧɨɣɩɨɱɜɟɧɧɨɣɳɟɥɨɱɧɨɣɤɢɫɥɨɬɧɨɣɫɨɥɟɜɨɣ ɦɟɠɤɪɢɫɬɚɥɥɢɱɟɫɤɨɣɤɨɪɪɨɡɢɢɤɨɪɪɨɡɢɢɩɨɞɧɚɩɪɹɠɟɧɢɟɦɢɞɪ
,,±ɠɚɪɨɫɬɨɣɤɢɟ ɨɤɚɥɢɧɨɫɬɨɣɤɢɟɫɬɚɥɢɢɫɩɥɚɜɵɨɛɥɚɞɚ ɸɳɢɟɫɬɨɣɤɨɫɬɶɸɩɪɨɬɢɜɯɢɦɢɱɟɫɤɨɝɨɪɚɡɪɭɲɟɧɢɹɩɨɜɟɪɯɧɨɫɬɢ ɜɝɚɡɨɜɵɯɫɪɟɞɚɯɩɪɢɬɟɦɩɟɪɚɬɭɪɟɜɵɲɟɋɪɚɛɨɬɚɸɳɢɟɜɧɟ ɧɚɝɪɭɠɟɧɧɨɦɢɥɢɫɥɚɛɨɧɚɝɪɭɠɟɧɧɨɦɫɨɫɬɨɹɧɢɢ
,,,±ɠɚɪɨɩɪɨɱɧɵɟ ɫɬɚɥɢɢɫɩɥɚɜɵɫɩɨɫɨɛɧɵɟ ɪɚɛɨɬɚɬɶɜɧɚ ɝɪɭɠɟɧɧɨɦɫɨɫɬɨɹɧɢɢɩɪɢɜɵɫɨɤɢɯɬɟɦɩɟɪɚɬɭɪɚɯɜɬɟɱɟɧɢɟɨɩɪɟɞɟ ɥɟɧɧɨɝɨɜɪɟɦɟɧɢɢɨɛɥɚɞɚɸɳɢɟɩɪɢɷɬɨɦɞɨɫɬɚɬɨɱɧɨɣɫɬɨɣɤɨɫɬɶɸ
ɉɨɯɢɦɢɱɟɫɤɨɦɭɫɨɫɬɚɜɭɧɟɪɠɚɜɟɸɳɢɟɫɬɚɥɢɞɟɥɹɬɫɹɧɚɨɫ ɧɨɜɧɵɟɝɪɭɩɩɵ
ɏɪɨɦɢɫɬɵɟɫɬɚɥɢɹɜɥɹɸɬɫɹɧɚɢɛɨɥɟɟɷɤɨɧɨɦɢɱɧɵɦɢɜɨɬɧɨ ɲɟɧɢɢɥɟɝɢɪɨɜɚɧɢɹɈɧɢɜɟɫɶɦɚɲɢɪɨɤɨɩɪɢɦɟɧɹɸɬɫɹɜɪɚɡɥɢɱ ɧɵɯɨɛɥɚɫɬɹɯɬɟɯɧɢɤɢɜɜɢɞɟɥɢɫɬɚɬɪɭɛɢɩɪɭɬɤɨɜɚɬɚɤɠɟɥɢɬɶɹ
ȼɡɚɜɢɫɢɦɨɫɬɢɨɬ ɫɨɫɬɚɜɚɢɫɬɪɭɤɬɭɪɵɨɧɢ ɩɨɞɪɚɡɞɟɥɹɸɬɫɹ ɧɚɫɥɟɞɭɸɳɢɟɩɨɞɝɪɭɩɩɵɩɨɎɎɏɢɦɭɲɢɧɭ
ɚ ɩɨɥɭɧɟɪɠɚɜɟɸɳɢɟɬɟɩɥɨɭɫɬɨɣɱɢɜɵɟɯɪɨɦɢɫɬɵɟ ɫɬɚɥɢ
ɫ&Uɡɚɤɚɥɢɜɚɸɳɢɟɫɹɧɚɦɚɪɬɟɧɫɢɬ
ɛ ɫɢɥɶɯɪɨɦɵɢɞɪɤɥɚɩɚɧɧɵɟɯɪɨɦɢɫɬɵɟɫɬɚɥɢ
ɜ ɧɟɪɠɚɜɟɸɳɢɟɯɪɨɦɢɫɬɵɟɫɬɚɥɢɫ&Uɡɚɤɚɥɢɜɚɸ
ɳɢɟɫɹɧɚɦɚɪɬɟɧɫɢɬ
ɝ ɫɥɨɠɧɨɥɟɝɢɪɨɜɚɧɧɵɟɧɟɪɠɚɜɟɸɳɢɟɫɬɚɥɢ ɫ&U
ɩɪɢɦɟɧɹɟɦɵɟɜɤɚɱɟɫɬɜɟɬɟɩɥɨɭɫɬɨɣɱɢɜɵɯɪɚɫɬɜɨɪɨɜɫɤɪɢ ɫɬɚɥɥɢɱɟɫɤɨɣɪɟɲɟɬɤɨɣɰɟɧɬɪɢɪɨɜɚɧɧɨɝɨɤɭɛɚ
ɞ ɧɟɪɠɚɜɟɸɳɢɟɢɤɢɫɥɨɬɨɭɩɨɪɧɵɟɯɪɨɦɢɫɬɵɟɫɬɚɥɢɫ&U
ɩɨɥɭɮɟɪɪɢɬɧɨɝɨɢɮɟɪɪɢɬɧɨɝɨ ɤɥɚɫɫɚɯɪɨɦɢɫɬɵɟɠɚɪɨ ɫɬɨɣɤɢɟɫɬɚɥɢɫ&Uɮɟɪɪɢɬɧɨɝɨɤɥɚɫɫɚɢɯɪɨɦɨɚ ɡɨɬɢɫɬɵɟɧɟɪɠɚɜɟɸɳɢɟɢɠɚɪɨɫɬɨɣɤɢɟɫɬɚɥɢ
ɟ ɯɪɨɦɢɫɬɵɟɠɚɪɨɫɬɨɣɤɢɟɫɬɚɥɢ ɫɩɪɢɫɚɞɤɚɦɢɚɥɸɦɢɧɢɹ
ɤɪɟɦɧɢɹɚɡɨɬɚɢɞɪɭɝɢɯɷɥɟɦɟɧɬɨɜ
Ɋɚɫɫɦɚɬɪɢɜɚɹɫɬɪɭɤɬɭɪɭɢɮɚɡɨɜɵɣɫɨɫɬɚɜɯɪɨɦɢɫɬɵɯɫɬɚɥɟɣ ɫɥɟɞɭɟɬɨɬɦɟɬɢɬɶɱɬɨɠɟɥɟɡɨɢɯɪɨɦɩɨɫɥɟɡɚɬɜɟɪɞɟɜɚɧɢɹɨɛɪɚɡɭ ɸɬɧɟɩɪɟɪɵɜɧɵɣɪɹɞɬɜɟɪɞɵɯɪɚɫɬɜɨɪɨɜ
ɉɪɢɫɨɞɟɪɠɚɧɢɢɯɪɨɦɚɛɨɥɟɟɫɬɚɥɶɢɦɟɟɬɬɨɥɶɤɨ Įįɫɬɪɭɤɬɭɪɭɉɪɢɦɟɧɶɲɢɯɫɨɞɟɪɠɚɧɢɹɯɯɪɨɦɚɜɨɛɥɚɫɬɢɬɟɦ ɩɟɪɚɬɭɪɋ ɢɦɟɸɬɫɹȖɢȖĮɬɜɟɪɞɵɟ ɪɚɫɬɜɨɪɵɇɚ ɤɨɧɟɰɠɟɥɟɡɨɯɪɨɦɢɫɬɵɟɫɩɥɚɜɵ ɢɦɟɸɬɯɪɭɩɤɭɸɧɟɦɚɝɧɢɬɧɭɸ ɫɨɫɬɚɜɥɹɸɳɭɸ±ıɮɚɡɭ Ɉɧɚɨɛɪɚɡɭɟɬɫɹɩɪɢɬɟɦɩɟɪɚɬɭɪɟ ɧɢɠɟ ɋɢɫɨɞɟɪɠɚɧɢɢɯɪɨɦɚɢɠɟɥɟɡɚɩɨɚɬɢɩɨɦɧɟɧɢɸ ɛɨɥɶɲɢɧɫɬɜɚɢɫɫɥɟɞɨɜɚɬɟɥɟɣɩɪɟɞɫɬɚɜɥɹɟɬɢɧɬɟɪɦɟɬɚɥɥɢɱɟɫɤɨɟ ɫɨɟɞɢɧɟɧɢɟ)H&Uɪɢɫ
ȼɵɞɟɥɟɧɢɹĮɮɚɡɵɤɨɬɨɪɵɟɢɦɟɸɬɦɟɫɬɨɜɜɵɫɨɤɨɯɪɨɦɢɫɬɵɯ ɫɬɚɥɹɯɩɪɢɦɟɞɥɟɧɧɨɦɨɯɥɚɠɞɟɧɢɢɢɥɢɧɚɝɪɟɜɟɛɵɫɬɪɨɨɯɥɚɠɞɟɧ ɧɨɣɫɬɚɥɢɫɨɩɪɨɜɨɠɞɚɸɬɫɹɛɨɥɶɲɢɦɢɨɛɴɟɦɧɵɦɢɢɡɦɟɧɟɧɢɹɦɢ ɱɬɨɹɜɥɹɟɬɫɹɩɪɢɱɢɧɨɣ ɢɫɤɥɸɱɢɬɟɥɶɧɨɜɵɫɨɤɨɣɯɪɭɩɤɨɫɬɢɩɨ ɞɨɛɧɵɯɫɬɚɥɟɣ
ɇɚɥɢɱɢɟɦɚɪɝɚɧɰɚɤɪɟɦɧɢɹɢɦɨɥɢɛɞɟɧɚɨɛɥɟɝɱɚɟɬɨɛɪɚɡɨɜɚ ɧɢɟĮɮɚɡɵɢɫɦɟɳɚɟɬɨɛɥɚɫɬɶɟɟɫɭɳɟɫɬɜɨɜɚɧɢɹɜɫɬɨɪɨɧɭɛɨɥɟɟ ɧɢɡɤɨɝɨɫɨɞɟɪɠɚɧɢɹɯɪɨɦɚ
Ⱦɥɹɩɨɜɵɲɟɧɢɹɤɨɪɪɨɡɢɨɧɧɨɣɫɬɨɣɤɨɫɬɢɯɪɨɦɢɫɬɵɯɫɬɚɥɟɣ ɠɟɥɚɬɟɥɶɧɨɩɨɥɭɱɟɧɢɟɧɢɡɤɨɝɨɫɨɞɟɪɠɚɧɢɹɭɝɥɟɪɨɞɚɜɷɬɨɦɫɥɭ ɱɚɟɭɫɬɪɚɧɹɟɬɫɹɨɛɪɚɡɨɜɚɧɢɟ ɤɚɪɛɢɞɨɜɢɫɨɯɪɚɧɹɟɬɫɹɨɞɧɨɪɨɞ ɧɨɫɬɶɫɬɪɭɤɬɭɪɵɈɞɧɚɤɨɞɥɹɩɨɜɵɲɟɧɢɹɡɚɤɚɥɢɜɚɟɦɨɫɬɢɢɬɜɟɪ ɞɨɫɬɢɧɟɨɛɯɨɞɢɦɨɢɦɟɬɶɜɫɬɚɥɢɩɨɜɵɲɟɧɧɭɸɤɨɧɰɟɧɬɪɚɰɢɸ ɭɝɥɟɪɨɞɚ
ɊɢɫȾɢɚɝɪɚɦɦɚɠɟɥɟɡɨɯɪɨɦ
ɏɪɨɦɨɧɢɤɟɥɟɜɵɟɢɧɢɤɟɥɟɜɵɟ ɫɬɚɥɢɢɦɟɸɬɫɚɦɨɟɲɢɪɨɤɨɟ ɩɪɢɦɟɧɟɧɢɟɜɩɪɨɦɵɲɥɟɧɧɨɫɬɢɢɡɚɧɢɦɚɸɬɧɚɢɛɨɥɶɲɢɣ ɭɞɟɥɶ ɧɵɣɜɟɫɜɜɵɩɥɚɜɤɟɧɟɪɠɚɜɟɸɳɢɯɫɬɚɥɟɣ
Ʉɯɪɨɦɨɧɢɤɟɥɟɜɵɦɫɬɚɥɹɦɜɧɚɫɬɨɹɳɟɟɜɪɟɦɹɦɨɠɧɨɨɬɧɟɫɬɢ ɛɨɥɟɟɩɨɥɭɫɨɬɧɢɦɚɪɨɤɤɨɬɨɪɵɟɢɫɩɨɥɶɡɭɸɬɫɹɜɜɢɞɟɩɨɤɨɜɨɤɫɨ ɪɬɨɜɨɝɨɢɥɢɫɬɨɜɨɝɨ ɩɪɨɤɚɬɚɝɨɪɹɱɟɤɚɬɚɧɵɯɢɯɨɥɨɞɧɨɤɚɬɚɧɵɯ ɬɪɭɛɮɚɫɨɧɧɵɯɩɪɨɮɢɥɟɣɢɥɢɬɶɹɜɚɜɢɚɰɢɨɧɧɨɣɢɚɬɨɦɧɨɣɬɟɯ ɧɢɤɟɜɯɢɦɢɱɟɫɤɨɣɩɪɨɦɵɲɥɟɧɧɨɫɬɢɢɷɧɟɪɝɟɬɢɤɟɚɬɚɤɠɟɜɞɪɭ ɝɢɯɫɚɦɵɯɪɚɡɥɢɱɧɵɯɨɛɥɚɫɬɹɯɬɟɯɧɢɤɢ
ɋɨɪɬɚɦɟɧɬɯɪɨɦɨɧɢɤɟɥɟɜɵɯɫɬɚɥɟɣɜɩɨɫɥɟɞɧɟɟɞɟɫɹɬɢɥɟɬɢɟ ɩɨɩɨɥɧɢɥɫɹɦɧɨɝɢɦɢɧɨɜɵɦɢɦɚɪɤɚɦɢɫɛɨɥɟɟɫɥɨɠɧɵɦɥɟɝɢɪɨ ɜɚɧɢɟɦɫɤɚɪɛɢɞɧɵɦɢɢɧɬɟɪɦɟɬɚɥɥɢɞɧɵɦɭɩɪɨɱɧɟɧɢɟɦɫɩɪɨɦɟ ɠɭɬɨɱɧɵɦɢɫɬɪɭɤɬɭɪɚɦɢɗɬɢɫɬɚɥɢɦɨɠɧɨɩɨɞɪɚɡɞɟɥɢɬɶɧɚɫɥɟ ɞɭɸɳɢɟɩɨɞɝɪɭɩɩɵ
ɚ ɯɪɨɦɨɧɢɤɟɥɟɜɵɟɚɭɫɬɟɧɢɬɧɵɟɫɬɚɥɢɫɦɚɥɵɦɫɨɞɟɪɠɚɧɢ
ɟɦɭɝɥɟɪɨɞɚɜɬɨɦɱɢɫɥɟɫɬɚɛɢɥɢɡɢɪɨɜɚɧɧɵɟɬɢɬɚɧɨɦɢɥɢ ɧɢɨɛɢɟɦ
ɛ ɯɪɨɦɨɧɢɤɟɥɟɜɵɟɤɢɫɥɨɬɨɫɬɨɣɤɢɟɚɭɫɬɟɧɢɬɧɵɟɫɬɚɥɢɫɩɪɢ
ɫɚɞɤɨɣɦɨɥɢɛɞɟɧɚɢɦɟɞɢ
ɜ ɯɪɨɦɨɧɢɤɟɥɟɜɵɟɨɤɚɥɢɧɨɫɬɨɣɤɢɟɫɬɚɥɢɫɜɵɫɨɤɢɦɫɨɞɟɪ
ɠɚɧɢɟɦɯɪɨɦɚɢɧɢɤɟɥɹ
ɝ ɯɪɨɦɨɧɢɤɟɥɟɜɵɟɫɬɚɥɢɚɭɫɬɟɧɢɬɨɦɚɪɬɟɧɫɢɬɧɨɝɨɤɥɚɫɫɚ
ɫɧɟɭɫɬɨɣɱɢɜɵɦɚɭɫɬɟɧɢɬɨɦ ɞ ɯɪɨɦɨɧɢɤɟɥɟɜɵɟɫɬɚɥɢɚɭɫɬɟɧɢɬɨɮɟɪɪɢɬɧɨɝɨɤɥɚɫɫɚ əɞɪɨɦɝɪɭɩɩɵɯɪɨɦɨɧɢɤɟɥɟɜɵɯ ɫɬɚɥɟɣɛɟɡɭɫɥɨɜɧɨɹɜɥɹɸɬ
ɫɹɚɭɫɬɟɧɢɬɧɵɟɫɬɚɥɢ ɬɢɩɚɧɚɩɪɢɦɟɪɏɇ ɏɇ ɏɇ ɏɇ ɏɇ ɫɬɚɛɢɥɢɡɢɪɨɜɚɧɧɵɟ ɬɢɬɚɧɨɦ ± ɏɇɌɏɇɌɏɇɌɏɇɌɏɇɌɏɇɆɌ ɏɇɆɌɏɇɆɌɢɧɢɨɛɢɟɦ±ɏɇȻɏɇɆȻ ɏɇɆȻɢɞɪɋɬɚɥɢɷɬɨɝɨɬɢɩɚɨɬɥɢɱɚɸɬɫɹɪɚɡɥɢɱɧɵɦɫɨɞɟɪ ɠɚɧɢɟɦɭɝɥɟɪɨɞɚɜɥɢɹɸɳɢɦɧɚɢɯɤɨɪɪɨɡɢɨɧɧɭɸɫɬɨɣɤɨɫɬɶ
ɇɢɡɤɨɭɝɥɟɪɨɞɢɫɬɚɹɫɬɚɥɶɢɫɩɨɥɶɡɭɟɬɫɹɜɤɚɱɟɫɬɜɟɷɥɟɤɬɪɨɞ
ɧɨɣɩɪɨɜɨɥɨɤɢɞɥɹɫɜɚɪɤɢɯɪɨɦɨɧɢɤɟɥɟɜɨɣɫɬɚɥɢɉɪɢɫɨɞɟɪɠɚ ɧɢɢɭɝɥɟɪɨɞɚɞɨ ɫɬɚɥɶɦɨɠɧɨ ɩɨɞɜɟɪɝɚɬɶɤɪɚɬɤɨɜɪɟɦɟɧ ɧɨɦɭɧɚɝɪɟɜɭɜɡɨɧɟɬɟɦɩɟɪɚɬɭɪɋɛɟɡɞɨɩɨɥɧɢɬɟɥɶɧɨɣ ɬɟɪɦɨɨɛɪɚɛɨɬɤɢɏɪɨɦɨɧɢɤɟɥɟɜɵɟɚɭɫɬɟɧɢɬɧɵɟɫɬɚɥɢɲɢɪɨɤɨɢɫ ɩɨɥɶɡɭɸɬɫɹɞɥɹɚɩɩɚɪɚɬɭɪɵɜɯɢɦɢɱɟɫɤɨɣɩɪɨɦɵɲɥɟɧɧɨɫɬɢɜɜɢ ɞɟɩɟɱɧɨɣɚɪɦɚɬɭɪɵɬɟɩɥɨɨɛɦɟɧɧɢɤɨɜɩɚɬɪɭɛɤɨɜɢɤɨɥɥɟɤɬɨɪɨɜ ɜɵɯɥɨɩɧɵɯɫɢɫɬɟɦ
ɏɪɨɦɨɧɢɤɟɥɟɜɵɟɨɤɚɥɢɧɨɫɬɨɣɤɢɟɫɬɚɥɢ ɫɩɨɜɵɲɟɧɧɵɦɫɨ
ɞɟɪɠɚɧɢɟɦɯɪɨɦɚɢ ɧɢɤɟɥɹɚɬɚɤɠɟɫ ɞɨɛɚɜɤɨɣɤɪɟɦɧɢɹɢɛɨɪɚ ɏɇɏɇɏɇɏɇɌɊɏɇɋɏɇȽȺɊ ɩɪɢɦɟɧɹɸɬɫɹɜɜɢɞɟɥɢɬɶɹɩɪɨɤɚɬɚɩɨɤɨɜɨɤɥɢɫɬɚɥɟɧɬɵɢɜɜɢɞɟ ɫɜɚɪɨɱɧɨɣɩɪɨɜɨɥɨɤɢɞɥɹɢɡɝɨɬɨɜɥɟɧɢɹɞɟɬɚɥɟɣɠɚɪɨɫɬɨɣɤɢɯɢɡɞɟ ɥɢɣɢɚɩɩɚɪɚɬɭɪɵɪɚɛɨɬɚɸɳɢɯɩɪɢɋ
ɋɨɞɟɪɠɚɧɢɟɭɝɥɟɪɨɞɚɜɞɟɮɨɪɦɢɪɭɟɦɵɯɫɬɚɥɹɯɤɚɤɩɪɚɜɢɥɨ
ɧɟɩɪɟɜɵɲɚɟɬɨɛɵɱɧɨɜɥɢɬɵɯɫɬɚɥɹɯɨɧɨɦɨ ɠɟɬɛɵɬɶɞɨɜɟɞɟɧɨɞɨ
ɉɨɫɬɪɭɤɬɭɪɟɷɬɢ ɫɬɚɥɢɦɨɝɭɬɛɵɬɶɚɭɫɬɟɧɢɬɧɵɦɢ ɧɚɩɪɢ
ɦɟɪɏɇɚɭɫɬɟɧɢɬɨɦɚɪɬɟɧɫɢɬɧɵɦɢɢɚɭɫɬɟɧɢɬɨɮɟɪɪɢɬɧɵ ɦɢɏɇȾɥɢɬɟɥɶɧɵɣɧɚɝɪɟɜɷɬɢɯɫɬɚɥɟɣɩɪɢɋɩɪɢ ɜɨɞɢɬɤɫɧɢɠɟɧɢɸɜɹɡɤɨɫɬɢɢɩɥɚɫɬɢɱɧɨɫɬɢɩɪɢɷɬɨɦɩɪɨɢɫɯɨɞɢɬ ɜɵɞɟɥɟɧɢɟĮɮɚɡɵɉɪɢɫɚɞɤɚɤɪɟɦɧɢɹɤɫɬɚɥɢɬɢɩɚ±ɭɜɟɥɢ ɱɢɜɚɟɬɟɟɫɤɥɨɧɧɨɫɬɶɤɨɛɪɚɡɨɜɚɧɢɸıɮɚɡɵɩɪɢɞɥɢɬɟɥɶɧɨɦɧɚ ɝɪɟɜɟɩɪɢɭɦɟɪɟɧɧɵɯɬɟɦɩɟɪɚɬɭɪɚɯɫɫɨɨɬɜɟɬɫɬɜɭɸɳɢɦɫɧɢɠɟɧɢ ɟɦɩɥɚɫɬɢɱɧɨɫɬɢɢɜɹɡɤɨɫɬɢɫɬɚɥɢ
Ⱥɭɫɬɟɧɢɬɨɦɚɪɬɟɧɫɢɬɧɵɟ ɧɟɪɠɚɜɟɸɳɢɟ ɫɬɚɥɢ ɏɇɘ
ɏɇɘɏɇɋɩɪɢɦɟɧɹɸɬɫɹɜɤɚɱɟɫɬɜɟɤɨɧɫɬɪɭɤɰɢɨɧɧɨ ɝɨɦɟɬɚɥɥɚɜɫɚɦɨɥɟɬɚɯɢɧɚɬɪɚɧɫɩɨɪɬɟ
ɉɨɞɚɜɥɟɧɢɟɷɜɬɟɤɬɨɢɞɧɨɝɨɪɚɫɩɚɞɚȖ!Įɫɧɢɠɟɧɢɟɬɟɦɩɟɪɚ
ɬɭɪɵɦɚɪɬɟɧɫɢɬɧɨɝɨɩɪɟɜɪɚɳɟɧɢɹɡɚɫɱɟɬɜɜɨɞɚɚɭɫɬɟɧɢɬɨɨɛɪɚɡɭ ɸɳɢɯɷɥɟɦɟɧɬɨɜɝɥɚɜɧɵɦɨɛɪɚɡɨɦɧɢɤɟɥɹɜɸɯɪɨɦɢɫɬɭɸ ɫɬɚɥɶɜɟɞɭɬɤɪɟɡɤɨɦɭɢɡɦɟɧɟɧɢɸɦɚɝɧɢɬɧɵɯ ɮɚɡɨɜɵɯɢɦɟɯɚ ɧɢɱɟɫɤɢɯɫɜɨɣɫɬɜɫɬɚɥɢɇɚɢɛɨɥɟɟɫɢɥɶɧɨɟɢɡɦɟɧɟɧɢɟɫɜɨɣɫɬɜɧɚ ɛɥɸɞɚɟɬɫɹɩɪɢ1L
ɏɪɨɦɨɦɚɪɝɚɧɰɟɜɵɟɢɯɪɨɦɨɦɚɪɝɚɧɰɟɜɨɧɢɤɟɥɟɜɵɟɫɬɚɥɢ±ɧɟ
ɪɠɚɜɟɸɳɢɟɫɬɚɥɢɜɤɨɬɨɪɵɯɧɢɤɟɥɶɛɵɥɩɨɥɧɨɫɬɶɸɢɥɢɱɚɫɬɢɱɧɨ ɡɚɦɟɧɟɧɞɪɭɝɢɦɚɭɫɬɟɧɢɬɨɨɛɪɚɡɭɸɳɢɦ ɷɥɟɦɟɧɬɨɦ±ɦɚɪɝɚɧɰɟɦ ɧɚɲɥɢɫɜɨɟɩɪɢɦɟɧɟɧɢɟɜɨɛɥɚɫɬɹɯɝɞɟɩɪɟɞɴɹɜɥɹɸɬɫɹɤɦɟɬɚɥɥɭ ɩɨɜɵɲɟɧɧɵɟɬɪɟɛɨɜɚɧɢɹɩɨɢɫɬɢɪɚɟɦɨɫɬɢɚɬɚɤɠɟɬɚɦɝɞɟɜɚɠ ɧɭɸɪɨɥɶɢɝɪɚɸɬɜɨɩɪɨɫɵɩɪɨɱɧɨɫɬɢɦɟɬɚɥɥɚɉɪɢɦɟɧɟɧɢɟɦɚɪ ɝɚɧɰɚɩɨɡɜɨɥɹɟɬɜɜɨɞɢɬɶ ɜɫɬɚɥɶɜɜɟɫɶɦɚ ɛɨɥɶɲɢɯɤɨɥɢɱɟɫɬɜɚɯ ɚɡɨɬȼɫɜɹɡɢ ɫɦɟɧɶɲɟɣɷɮɮɟɤɬɢɜɧɨɫɬɶɸɦɚɪɝɚɧɰɚ ɤɚɤɚɭɫɬɟ ɧɢɬɨɨɛɪɚɡɭɸɳɟɝɨɷɥɟɦɟɧɬɚɱɟɦ ɧɢɤɟɥɹɨɧɞɨɥɠɟɧɜɜɨɞɢɬɶɫɹ ɜɫɬɚɥɶɜɛɨɥɶɲɢɯɤɨɥɢɱɟɫɬɜɚɯɩɨɱɬɢɜɞɜɚɪɚɡɚȼɡɚɜɢɫɢɦɨɫɬɢ ɨɬɫɨɫɬɚɜɚɫɬɪɭɤɬɭɪɵɢɫɜɨɣɫɬɜɷɬɢɫɬɚɥɢɩɨɞɪɚɡɞɟɥɹɸɬɫɹɧɚɧɟ ɫɤɨɥɶɤɨɩɨɞɝɪɭɩɩ
ɚ ɚɭɫɬɟɧɢɬɧɵɟɫɬɚɥɢɫ&Uɢɪɚɡɥɢɱɧɵɦɫɨɞɟɪɠɚɧɢ
ɟɦɦɚɪɝɚɧɰɚɢɧɢɤɟɥɹ ɛ ɚɭɫɬɟɧɢɬɧɵɟɫɬɚɥɢɫ&Uɢɪɚɡɥɢɱɧɵɦɫɨɞɟɪɠɚɧɢ
ɟɦɦɚɪɝɚɧɰɚɢɧɢɤɟɥɹɫɞɨɛɚɜɤɨɣɚɡɨɬɚ
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