| 单词 | screw ventilator |
| 释义 | > as lemmasscrew ventilator ΚΠ 1843 Era 19 Feb. 5/3 The lecturer..produced various models to show the superiority of the screw-ventilator over the fanner, chimney-draft, and others. 1922 Rep. Alien Prop. Custodian in U.S. Senate Documents (67th Congr., 2nd Sess.: Senate Doc. No. 181) XV. 859 Coupling of screw propellers, screw ventilators, flywheels, and other rotating machinery. < as lemmas |
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