Translate the sentences into Russian.

1. The flame is applied directly to the metal, edges to joined to a filler metal in the form of rod.

2. The charge-air compressor and exhaust gas turbine are combined to form supercharging unit.

3. This method is not good enough to be used everywhere.

4. Experiments on the improvement of radar equipment began to be made during World War II.

5. To improve the accuracy of this device meant to expand its usefulness.

6. Our engineers want to test this machine in our laboratory.

7. To achieve better results we must repeat the experiment.

8. This duty was to save the passengers left on the ship.

9. The method employed in the cyclotron is to apply a moderate force to a particle many times.

10. To increase the range of modern radar scientists had to make numerous experiments.

Translate the following sentences into English.

1. Известно, что цветному телевидению принадлежит будущее.

2. Говорят, что наш завод получил новые электронные приборы.

3. Я бы хотел, чтобы вы доставили продукты завтра утром.

4. Кажется, все студенты читали эту статью.

5. Невозможно стать хорошим специалистом без глубокого знания предмета.

Вариант 2.

1. Translate the following text into Russian in writing:

WELDING.

Welding is a process which provides a non-detachable joining of two like metal pieces by heating them till melting condition or fusion without or with mechanical pressure. Fusion of two metal pieces may be brought about by different types of welding, such as hammer welding, thermit welding, electric welding and gas welding. Hammer welding is process in which two metal pieces are joined and fused together by force from a hand or power hammer after having heated these pieces in a blacksmith's forge until they reached their plastic stage. Thermit welding is a process consisting of a chemical reaction obtained by igniting finely divided aluminium and iron oxide. This type of welding is used in repairing rails, frames, etc. Electric resistance welding is a process consisting of heating metals to be welded to their plastic temperature and then applying mechanical pressure for achieving a non-detachable joining of the metals. Resistance welding processes form a group consisting of many types of welding. Selection of each type of welding depends on the kind and size of metals to be welded. Resistance welding embraces such processes as spot welding, butt welding, electric arc welding, etc. Spot welding is a process in which two metals are held between electrodes passing a heavy current through the metals to be welded. The electrodes having been forced together by pressure join the surfaces of the metals in a spot, the size of which is about the same as that of the tip of the electrode. This kind of welding is suitable for welding parts of aeroplanes, refrigerators and automobiles.

2. Answerthefollowingquestions:

1. What does welding process provide?

2. How may fusion of two metal pieces be brought about?

3. What types of welding do you know?

4. Where is thermit welding used?

5. Where is sport welding suitable?

3. Find the Russian equivalents in the right hand column:

4. Translate the sentences into Russian:

1. Electric resistance welding is a process of heating metals to be welded to their plastic temperature.

2. This kind of welding is suitable to weld parts of airplanes, refrigerators and automobiles.

3. This device is used to measure the electric the electric energy.

4. To understand these principles one must know the Periodic law.

5. It is often possible to build a compound directly from its elements or to separate a compound into its elements.

6. Radio waves may be made to perform many services more or less closely related to communication.

7. To know the principles of modern devices specialists must thoroughly study radio and electronics.

8. The main task of Faraday’s work was to find out the nature of electricity and magnetism.

9. To oil the cylinder walls a separate mechanical force-feed system is used.

10. The most common type of pump to be found in engine-rooms of both steam turbine and diesel engine powered vessels is the centrifugal unit.

Translate the following sentences into English.

1. Я хочу, чтобы его статья была опубликована.

2. Она, кажется, знает три иностранных языка.

3. Необходимо использовать этот метод при создании новых материалов.

4. Я не видел, чтобы кто-нибудь заходил в вашу каюту.

5. Эта книга, по-видимому, была переведена очень опытным переводчиком.

Вариант 3.

1. Translate the following text into Russian in writing:

WELDING

Welding is a process of joining together metallic parts by heating the place of contact to the fusion state.

Welding processes are classified according to the source of energy employed for heating, the metals and the state of the metal at the place of welding.

There are different types of welding such as hammer welding, thermit welding, electric arc welding, gas welding, etc.

Hammer welding is a process in which two heated metal parts are joined and fused together by force from a power hammer.

Thermit welding is a process consisting of a chemical reaction. It is used in repairing large sections such as rails, frames, etc.

Resistance welding process forms a whole group consisting of many types of welding such as spot welding, burl welding and others.

In arc welding the workpieces are not melted by a flame. They are melted by an electric arc. In order to create the arc, a powerful electric current must be provided. The current must be at least 60 A, otherwise the arc will not create enough heat.

Arc-welding is the most important welding process for joining steels. It requires a continuous supply of either direct or alternating electrical current. This current is used to create an electric arc, which generates enough heat to melt metal and create a weld. Arc welding has several advantages over other welding methods. Arc welding is faster because concentration of heat is high. Also, fluxes are not necessary in certain methods of arc welding.

In gas welding, it is necessary to use a mixture of two gases. To create a hot flame, a combustible gas must be mixed with oxygen.

Gas welding is normally used to join steel to steel.

2. Answerthefollowingquestions:

1. What kind of process is welding?

2.How are welding processes classified?

3.What is hammer welding?

4.What is arc welding?

5.What is thermit welding?

3. Find the Russian equivalents in the right hand column:

4. Translate the sentences into Russian:

1. To improve running of piston rings the pistons run in soft-nitrited cylinder liners.

2. Thermit welding is used to repair large sections such as rails, frames etc.

3. To create the arc, a powerful electric current must be provided.

4. In gas welding it is necessary to use a mixture of two gases.

5. To create a hot flame, a combustible gas must be mixed with oxygen.

6. The cams wit double contours allow the camshaft to be moved axially by hydraulic sewd.

7. Most of the components are readily accessible and special equipment is available to reduce overhaul time.

8. The cooling system job is to remove the unwanted heat from the moving parts of the engine.

9. Many engines use oil coolers to remove the heat in the lubricating oil.

10. The purpose of the auxiliary pump is to supply lubrication before the engine reaches speed.