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单词 gauge-door
释义

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gauge-door
gauge-door n. (see quot.).
ΚΠ
1883 W. S. Gresley Gloss. Terms Coal Mining Gauge-door, a wooden door fixed in a mine in an airway for regulating the supply of ventilation necessary for a certain district, or number of men, &c.
extracted from gaugen.
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更新时间:2024/12/25 10:41:58