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| 1. | It is evident that a big kettle containing boiling water will give out more heat than a smaller one. |
| 清楚的是，盛有开水的大水壶要比小水壶放出的热量多。 |
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| 2. | "If it is positive (heat must be added), the reaction is endothermic; if it is negative (heat is given off), the reaction is exothermic." |
| 如果这个热量是正的(必须加入热量),就说这个反应是吸热的;如果反应热是负的(放出热量),那就是放热反应。 |
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| 3. | quantity of combustion |
| 燃烧值|燃烧时放出的热量 |
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| 4. | A fuel is a material which will burn at a reasonable temperature and produce heat. |
| 燃料是一种物质，在适当温度下能够燃烧并放出热量。 |
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| 5. | the radiation of heat from a stove |
| 热量从火炉放出 |
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| 6. | a heater that burns gas for heat. |
| 燃烧气体放出热量的加热器。 |
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| 7. | Heat is always given out by one substance and taken in by another when heat-exchange takes place. |
| 热交换发生时，总是某一物质放出热量，另一物质吸入热量。 |
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| 8. | development of gas |
| 放出气体；放出毒气 |
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| 9. | In an adiabatic system, this heat release serves to increase the chamber temperature. |
| 在一绝热系统中，放出的热量增加了燃烧室的温度。 |
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| 10. | heat conservation |
| 热量守恒； 热量保存 |
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