英语词汇“shaft signaling”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	shaft signaling
释义	shaft signaling shaft signaling [′shaft ¦sig·nəl·iŋ] (mining engineering) The transmission of visible and audible signals between the onsetter or hitcher at the pit bottom and the banksman or hoistman at the pit top.
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