英译汉：“ It is found that the heat energy developed in any conductor is proportional to (is in proportion to) the square of the current, the resistance of the conductor and the time.”
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- 1.英译汉：“ It is found that the heat energy developed in any conductor is proportional to (is in proportion to) the square of the current, the resistance of the conductor and the time.”
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- 12.The current is ___ proportional to the voltage and ___ proportional to the Resistance. 选项： A:directly, B:inversely, C:directly, D:inversely,
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- 17.In calm weather ,,which normally represents about 2%of the total resistance,is proportional to the square of the ship's speed and proportional to the cross-sectional area of the ship above the waterline
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