英语词汇“floor sill”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	floor sill
释义	floor sill floor sill [′flōr ‚sil] (mining engineering) A large timber laid flat on the ground or in a level, shallow ditch, to which are fastened the drill-platform boards or planking, or which is used as the base for a full timber set.
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