| 单词 | screw rudder |
| 释义 | > as lemmasscrew rudder screw rudder n. now rare a screw propeller used to steer a vessel, esp. by pivoting side-to-side. ΚΠ 1844 Artizan Oct. 231/1 Screw rudder.—A small steamer..has been recently completed, and has made several trips. 1871 Mechanics' Mag. 16 Sept. 214/1 The power of the screw rudders is obtained without the slightest impediment to progress. 1982 U.S. Patent 4,358,280 1/1 This invention relates to a device for rotationally driving and steering a screw-rudder. < as lemmas |
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