英语词汇“floor opening”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 opening
释义	floor opening floor opening According to OSHA: an opening measuring 12 in. (30.5 cm) or more in its least dimension in any floor, roof, or platform, through which persons may fall.
随便看	european regional business economic development unit european regional development fund european regional economic forum european regional education network european regional information society association european regional innovation survey european regional medical command european regional network on aids european regional policy group european regional science association european regional science association council european regional seas ecosystem model european regional working group european region of culture european regions airline association european regions airlines association european regions for youth european regions research and innovation network european region wwmccs inter-computer network european registered toxicologist european register for osteopathic physicians european register of marine species european register of microform masters european registration centre european registry of congenital anomalies and twins

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