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单词 McDougall furnace
释义

McDougall furnace

noun

Mc·​Dou·​gall furnace
mə̇kˈdügəl-
: a roasting furnace consisting of a vertical cylindrical shaft containing several superposed hearths over which ore entering at the top is made to pass consecutively by mechanical rabbles rotating around a central shaft

Word History

Etymology

after McDougall, 19th century British engineer

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更新时间:2024/11/14 18:52:18