In various special or technical senses. A thin piece of wood or metal, in the shape of a right-angled triangle, used as a bell-crank or connected…
| 单词 | θ191773 |
| 释义 | society > communication > indication > signalling > audible signalling > ringing of bells as signal > [noun] > bell rung by cord > bell crank (1) square1880 In various special or technical senses. A thin piece of wood or metal, in the shape of a right-angled triangle, used as a bell-crank or connected… |
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