| 单词 | 工作物质 |
| 释义 | 〔refrigerant〕A substance, such as air, ammonia, water, or carbon dioxide, used to provide cooling either as the working substance of a refrigerator or by direct absorption of heat.致冷剂：能够提供空气、氨、水或二氧化碳等冷却的物质或可以用作电冰箱工作物质的一部分或可以用于直接吸热〔compression〕The process by which the working substance in a heat engine, such as the vapor mixture in the cylinder of an internal-combustion engine, is compressed.工作物质在热机中的压缩过程，如内燃机中混合蒸汽的压缩 |
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