| 单词 | bell-crank |
| 释义 | > as lemmasbell-crank bell-crank n. a crank or species of lever adapted to communicate motion from one bell-wire to another lying at right angles to it; also attributive. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > lever > [noun] > others hammer1546 pawl1730 swinger1825 key1837 throw lever1866 sweep-rod1867 bell-crank1881 control lever1887 touch key1957 1881 F. J. Britten Watch & Clockmakers' Handbk. (ed. 4) 110 On the lever [of Brocot's Perpetual Calendar].., is pivotted freely a bell-crank lever. < as lemmas |
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