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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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更新时间:2024/9/21 2:48:16