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Scientific English Writing Section Ⅳ ;Ex.1 E/C (adj. and adv.)
1. The answer (key) to this problem looks (appears) correct.
2. The force acts perpendicular to the surface of the table.
3. Accurate in operation and high in speed, computers have found wide applications.
4. Upon rearranging the equation above, we have [get, obtain] the following expression.
5. The charge is moving parallel to the electric field.;Ex.2 E/C (noun)
1. This police car is equipped with a receiver the size of a matchbox.
2. This device is water resistant.
3. The current in a circuit is proportional to the applied voltage, something [a fact] that was verified experimentally by Ohm.
4. This law applies to bodies the speed of a rocket.
5. We must frequency modulate it. ;;
(3) say=let us say
Well-grounded students can absorb Chapters 4 and 5 in say three weeks.
A resistor of say 100 ohms may be connected across the capacitor.;II. Negation;Summary
1. Partial negation
all [both, every] + not
2. Full negation
no [none of the …, neither ]+ n.
(E/C) Both books are not suitable.
(C/E) 这两台设备的质量都不好。;Ⅲ. Comparison
; Computers are ing ever smaller.; That cable is as long as three kilometers.
Efficiencies of as much as 99% are achieved in large transformers。
月亮离地球的距离远达24万英里。 ;(4) The ways to express the idea of “… 越…, 就越…”
;Independent work 4;4. 如果这关系式成立的话，我们就会得到一个负的电流，这种情况是不可能的。
If this relation were to hold, we would get a negative current, an impossible situation.
5. 色谱法（chromatography）是一种非常有效的分离方法，它已得到了广泛的应用。
A very effective separation method, chromatography is widely used.
6. 一块15m长的厚木板放在相距8m的两个支座(support)上。
A plant 15-meter-long is put on 2 supports 8 meters apart.
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