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Date: 2015-10-07; view: 442.

V. Прочитайте предложения, сделайте грамматический разбор, определите время и залог сказуемого и функцию инфинитива:

1. The main purpose of the coolant systems is to prolong tool life under production conditions. 2. Complex systems of gears to control the machine have been developed. 3. Automobile industry prefers to use alloy steels for gears and axles. 4. To extract metallic mineral from the ore of low concentration is rather difficult task. 5. Some older models have the mechanism to lift and orient the table in position. 6. To generate power from low-head applications is possible with a reactive turbine. 7. A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by machining. 8. Large modern water turbines are intended to operate at mechanical efficiencies greater than 90%. 9. Conventional high-pressure turbine blades are made from nickel based alloys and often utilize air cooling to prevent the metal from overheating. 10. This change in speed forces a designer to change the feeding mechanism. 11. The task of a lathe is to perform various operations such as cutting, drilling or deformation with tools that are applied to the workpiece to create an object which has symmetry about an axis of rotation.

VI. Прочитайте предложения, сделайте грамматический разбор, определите функцию герундия:

1. Newton's second law describes the rules for transferring energy for impulse turbines. 2. Impulse turbines act on the principle of changing the velocity of a water jet. 3. The designer insisted on testing the machine with maximum payload. 4. Pressing is decreasing the length and increasing the diameter of the metal. 5. Cutting occurs when material is separated from the surface in the form of chips. 6. Besides, Parsons was the first who offered the so-called principle of staging. 7. Welding is joining two pieces of metal together. 8. They have stopped designing a new analog of the machine tool because of some problems. 9. The invention of the Kaplan turbine allowed efficient power production by installing it in low-head applications.

VII. Прочитайте предложения, обратите внимание на слова с ing-окончанием, определите, чем они являются (причастие I, герундий или отглагольное существительное):

1. In moving against the stationary workpiece the tool begins rotating with increasing speed. 2. The resulting change in momentum (impulse) leads to appearing a force on the turbine blades. 3. There is nothing to prevent from appearing such problems in future. 4. Chip-making operations are turning, milling and drilling. 5. Rapid developing the water turbines occurred in the nineteenth century, during the Industrial revolution, with using scientific principles and manufacturing methods. 6. Software can also be described as a collection of routines, rules and symbolic languages that direct the functioning of the hardware. 7. After being lubricated the bearings were tested at maximum operating speed. 8. Presses employ a number of different shaping processes, including pressing and drawing. 9. The shaping is accomplished by removing material from a workpiece or by pressing it into the desired shape. 10. Typical applications of robots include welding, painting and testing, all accomplished with high speed and accuracy.

VIII. Прочитайте предложения, определите тип оборота (СИО, ОИО, СПО, ОПО, НПО, герундиальный оборот) и переведите предложения:

1. This process is assumed increasing the physical characteristics of the metal. 2. You must know the physical characteristics of the metal to be improved by forging. 3. Turbine-powered generators producing most of the world's electrical energy is widely known fact. 4. We observed the metal being poured into the sand mold. 5. In this particular application the wheel with movable blades proved to be more efficient than the wheel with fixed blades. 6. According this principle steam was permitted to expand in a number of stages, a small amount of thermal energy converted to kinetic energy and performing useful work at each stage.

IX. Прочитайте и переведите предложения, обращая особое внимание на слова-заменители:

1. Grinding is the removal of metal by a rotating abrasive wheel; the action is similar to that of a milling cutter. 2. The materials cut by PAM are generally those that are difficult to cut by any other means, such as stainless steels and aluminum alloys. 3. In electron-beam machining (EBM), electrons are accelerated to a velocity nearly three-fourths that of light. 4. Iron and Steel Manufacture is technology related to the production of iron and its alloys, particularly those containing a small percentage of carbon. 5. Steam Turbines were traditionally more impulse but continue to move towards reaction designs similar to those used in Gas Turbines. 6. These steels have a specified composition, containing certain percentages of vanadium, molybdenum, or other elements, as well as larger amounts of manganese, silicon, and copper than the ones which is known as the regular carbon steels.