科技英语第08章黑白.ppt

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幼怨柴
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1 SEE.LYF Of wider application is the fact that matter usually expands when its temperature is increased and contracts when its temperature is decreased. Of particular value has been the constructive criticism of many teachers. 4

2 More important is the fact that the reverse current increases exponentially with temperature. Here is an experiment. 2 there From this condition follows Euler s equation. The center of mass is the point through which passes the resultant of the reaction forces when a body is accelerated. In this case there results a potential difference between the two points. There remain many important features about all lasers that have yet to be addressed. 7 8

3 3 + is (are, ) + what 9 Moving round the nucleus are negatively charged particles called electrons. (= What are moving round the nucleus ) Surrounding the earth is a layer of air of unknown thickness. (= What surrounds the earth ) 10 Shown in Fig. 1 1 is the block diagram of a radio transmitter. (= What is shown in Fig. 1 1 ) Superimposed upon these considerations is the need to conserve energy and material resources. (= What is superimposed on these considerations ) 11 12

4 However, remaining open is the question of whether WSI (= wafer scale integration ) will enjoy a time in the sun do By no means positive charges (move) in a wire. By linear operation is meant (mean) the ability of an amplifier to amplify a signal with little or 14 no distortion There (show) is shown a block diagram of a digital computer in Fig only+ so=also 15 16

5 Only when the force is known as a never, function of time can this integral hardly, scarcely, be evaluated. Only rarely, not only, not until, little, seldom, not always By no means ( )do positive charges neither, nor move in a wire by no means, in no way, at no time, in no case, on [under] no condition, under no circumstances, on no + + there be+ account 19 20

6 By a family of curves is meant a specified set of curves which satisfy given conditions. In Fig. 2 1 are shown an ammeter and a voltmeter. Into the ends of the hose are thrust glass tubes 10 to 12 inches long. 21 Consider first the RC filter of Fig. 2 7 to which is applied the square wave of period T. Fig. 2 5 shows a block on which are exerted two forces F 1 and F 2. There is shown the block diagram of a digital computer in Fig There 22 To each point of S let there be assigned a definite number, n. There is present a magnetic field which varies with time. 23 The purpose of this article is to present a critical survey of the field of language data processing, by which is meant the processing of natural language data by computer. 24

7 *** nuclear weapons Under no circumstances By no means Under no circumstances will China be the first to use nuclear weapons B [ ] A This process we call automation. This point we shall discuss in detail later. 27 With pressure the gap decreases. Of one thing we can be sure: If the charges are at rest, there is no electric field within the metal ball. 28

8 B [ ] Certain it is that all essential processes of plant growth and development occur in water. 29 ***Said Dr. Samuel Rankin, head of the mathematical sciences department at Worchester Polytechnic Institute in Worchester, Mass. : The further you go out into the scientific and technological frontiers, especially in the kinds of things we are seeing today, 30 you are going to find mathematics. 3 A Electromagnetic waves make possible radio broadcast and television. Friction makes necessary a good lubrication system. 31 A We call insulators these substances which prevent the passage of electricity. 32

9 A The advent of large scale integration has now made commonplace computers with instruction set capable of directly accessing and flexibly manipulating a number of different data types and sizes. 33 A 34 A That still leaves to be explored an area ten times as great as the continents of the earth. 35 B Only when we exert on an object an upward force sufficient in magnitude can we lift it. Only when can when 36

10 B The oscillator maintains between its terminals a sinusoidal alternating potential difference. 37

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