| 单词 | crank-arm |
| 释义 | > as lemmascrank-arm crank-arm n. ΚΠ 1889 P. N. Hasluck Model Engineer's Handybk. ii. 14 The bed-plate is..cut away to allow the crank-arm and cross-head to pass. 1911 Encycl. Brit. XVII. 1005/1 In a turning piece, the perpendicular let fall from its connected point upon its axis of rotation is the arm or crank-arm. 1951 Good Housek. Home Encycl. 25/1 A flexible brush should be used to brush away any dust..at both ends of the crank arms. < as lemmas |
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