| 单词 |
rarefier |
| 释义 |
ˈrarefier rare. [f. rarefy v. + -er1.] That which rarefies.
1686Goad Celest. Bodies i. ii. 6 Such infinite variety of Rarefiers and Condensers. 1798Hutton Course Math. (1807) II. 240 The air-pump, or rarefier. |

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