| 单词 | drum pulley |
| 释义 | > as lemmasdrum pulley drum pulley n. ΚΠ 1813 J. Farey Gen. View Agric. Derbyshire II. v. 51 The strap-drum for working the drum pulley M, and the rope-pulley for working the rake-pulley L, are fixed on a horizontal axis of the Water-mill Geer. 1922 Pop. Mech. Apr. 628/1 A long straight drum pulley on the overhead shaft will be needed. 2013 U.S. Patent 8,441,141 B1 3 The first and second pulleys..may be drum pulleys. < as lemmas |
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