“underground engineering support”的概念、定义、翻译、参考文献-科学参考

单词	underground engineering support
释义	underground engineering support Encyclopedia 理学地下工程支护释 underground engineering support地下工程支护地下工程开挖过程中，为防止围岩坍塌和石块下落采取的支撑、防护等安全技术措施。
随便看	Letchworth Le Tenneur lethal lethal concentration 50 lethal dosage lethal dose lethal effect lethal gene lethality lethal mutation lethargy Letnikov let-notation Leto Leto family Letronne crater let some people get rich first Let's Shake It Let's Talk letter letter-by-letter encoding lettered-words letter for the publication of a book with a writer Letter from Jiang Zhuyun to Tan Zhu'an letter from King George Ⅲ of England to Emperor Qianlong

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