“safety degree of gas drainage”的概念、定义、翻译、参考文献-科学参考

单词	safety degree of gas drainage
释义	safety degree of gas drainage Encyclopedia 工学瓦斯抽采释 safety degree of gas drainage抽采安全度煤层瓦斯抽采过程的安全性系数。
随便看	ultraperiodic ultraphosphate ultraphotic rays ultraporcelain ultrapower ultra-precision cutting of single crystal brittle material assisted with ion implantation ultra-precision cutting of surface-modified carbon steel ultra-precision grinding of brittle materials ultra-precision machining ultra-precision machining of optical spherical and freeform surface ultra-precision manufacturing of optical surfaces ultra-precision mechatronics system ultra-precision opto-mechanical system ultraproduct ultraproduct technique ultraproduct theorem ultra-pure materials ultrapure water ultrapurification of materials ultraradical ultrarapid lens ultraray ultrarays ultra-red ultraregular space

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