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21. | Accent the word "energy" on the first syllable. |
| "energy"这个词重读第一音节。 |
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22. | The mechanical energy can be changed back into electrical energy by means of a dynamotor. |
| 利用发电机可以把机械能从新转变成电能. |
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23. | They can turn 80 per cent of sugar into electrical energy. |
| 它们能将80%的糖份转化为电能。 |
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24. | energy from the sun that is converted into thermal or electrical energy. |
| 从太阳那里获得的转化后的热能或电能。 |
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25. | A generator is a machine designed to change mechanical energy into electrical energy. |
| 发电机是为了改变机械能为电能而设计的机器。 |
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26. | The International System unit of electrical, mechanical, and thermal energy. |
| 焦耳电能、机械能和热能的国际体制单位 |
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27. | The heat produced is equal to the electrical energy wasted. |
| 产生的热量等于浪费了的电能。 |
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28. | Power generation means conversion of energy from a primary form to the electrical form. |
| 发电就是将一次能源转变为电能。 |
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29. | One that generates, especially a machine that converts mechanical energy into electrical energy. |
| 发生器发生器,尤指把机械能转化为电能的机器 |
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30. | electrokinetic energy |
| 动电能 |
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