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| 单词 | cryogen |
| 释义 | cryogen (once / 1688473 pages) n WORD FAMILY cryogen: cryogens USAGE EXAMPLESBut the big machines are expensive to make, use a lot of energy and require costly cryogen liquids like liquid nitrogen to keep them cool. Washington Times(Jun 04, 2015) n a liquid that boils at below -160 C and is used as a refrigerant Hypo|Hyper liquid nitrogen nitrogen in a liquid state liquid airair in a liquid state refrigerant any substance used to provide cooling (as in a refrigerator) |
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