Неличные формы английского глагола. Коптева Н.Ю. - 62 стр.

VII. Translate into Russian paying attention to the Infinitive
     Constructions. (see the key on page 89)
     1. If the forces have no tendency to increase or decrease the
        displacement, the body is considered to be in equilibrium.
     2. The number of protons was assumed to be sufficient to account
        for the atomic weight.
     3. We know the velocity of a particle to be continuously changing
        if this particle has non-uniform motion.
     4. The acceleration of an automobile is said to be positive when
        force is supplied by the motor to speed up the car.
     5. One of the most important things for the pilot to know is how
        high he is flying.
     6. The time required for the pulse to travel to and from the target
        is very short.
     7. For a system of forces to be in equilibrium, each force must
        be the equilibrant for the system.
     8. It is essential for the operators to be screened behind lead
        baffles and tanks of water which absorb the neutrons produced.
VIII. Define the functions of the Infinitive and translate the sentences
     into Russian paying attention to the Infinitive Constructions. (see
     the key on page 89)
     1. Suppose a given number of electrons to make their way between
        the ions of a copper wire.
     2. The chief reason for the use of such bearings in machinery is
        to reduce wear and to simplify lubrication problems.
     3. The most common alternating current for lighting and power
        purposes is assumed to go through 50 cycles in l second.
     4. Heat absorbed by a liquid causes the liquid to evaporate.
     5. To find the power of an alternating current it is necessary to
        multi ply the effective current by the effective voltage, provided
        the current and voltage are in phase.
     6. We want you to take into consideration that voltage, resistance
        and capacity are the three important properties to influence
        the flow of current in an electric circuit.
     7. To cut down the flow of water in agiven pi pe you need only
        to shut off a valve in that pi pe.



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