英语词汇“bell and hopper”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	bell and hopper
释义	bell and hopper noun : an apparatus at the top of a blast furnace consisting of a large hopper closed by a cone which is pulled up from below by the apex and through which the charge may be introduced without escape of the gases
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