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单词 θ202932
释义
society > travel > rail travel > [noun] > operation of railways > setting of fog signals (2)
fog-signalling1856

the action or practice of signalling in foggy conditions on the railways or at sea.

fogging1870

spec. The action or practice of signalling to trains in foggy weather, esp. by placing fog signals on the tracks. Cf. fog, v.1 5 fog-signalling n. at…

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更新时间:2024/12/24 9:34:40