Lesson 1
Переведите предложения, обращая внимание на значения следующих слов и словосочетаний:
alternative, both… and, to be unlikely, the
Recommendations that have been submitted are expected to be approved shortly.
The transmissions of microwaves across the oceans would have been impossible if no satellites had been launched.
Ionospheric maps have been made and are being produced by persons having considerable knowledge of inospheric data and experience in drawing maps
The equipment is completely symmetrical, so that either A or B units may well be used as the working or the stand-by set.
The signals at the receiving end are combined for two successive lines by means of a delay line, one of the components being reproduced by addition and the other one by subtraction.
Alternative distribution amplifiers must have been designed to suit output requirements of small and large stations.
In all of this work the requirements of both civil and military services have to be studied.
This kind of work is unlikely to estimate the future economic growth of the system.
Lesson 2
Переведите предложения, обращая внимание на значения следующих слов и словосочетаний:
one, along, to say, to believe, provided, its, originally, to do, most of, to facilitate, by+ing
A current which always flows in one direction along a wire is said to be a direct current.
The density of a body can be estimated provided its mass and volume are known.
Originally the Earth’s temperature must have been extremely high.
The nuclei do contain most of the mass of the atom.
It is possible to facilitate the escape of an electron from a conductor by increasing its speed.
During saturation, electrons are being drawn to the anode.
In figure 2 is shown a diagram of levels of energy.
Lesson 3
Переведите предложения, обращая внимание на значения следующих слов и словосочетаний:
To assume, to suppose, here, as to raise, by means of, the…the, to be dependent on (upon), that, with, it is… that, the subject
We assume the electric current to be flowing from left to right.
The oscillator is used here simply as a frequency-controlling element, the power being raised to the desired level by means of amplifiers.
The ordinary transformer is supposed to have no load losses.
The more easily the electrons can be displaced, the less will be the resistance.
That equipment may have been similar in many respects to that described in section 5.
The effect is highly dependent upon frequency with the lower frequencies showing less noise.
It is these special properties of sound that are the subject of the present paper.
If other types are available, the designers will consider using them.
Lesson 4
Переведите предложения, обращая внимание на значения следующих слов и словосочетаний
either …or, to know, work, to lead to, and so on, to assume, to consist of, via, single, number, thus, to reduce, rather than
A generator of either direct or alternating current may have been used for charging the
condenser.
2 In AM transmission all information to be conveyed is contained in one sideband.
3 The ordinary transformer is supposed to have no load losses
The field is assumed as consisting of lines of force originating on the charge and
spreading in all directions
5 Ammeters are connected in series with the circuit in which the current is to be measured.
6 Had particular care been taken with the wiring, very high frequencies could have been
attained.
7 Many earth stations are interconnected via a single satellite, the number of aerials
required by each station being small and thus reducing the cost oh the stations and the
complexity of operation
The accuracy of reception depends on the pulses and their polarities, rather then their
relative duration.