英语词汇“medium and small colliery”的翻译、意思、用法、释义-英汉汉英双解词典

单词	medium and small colliery
释义	medium and small colliery 基本例句中小煤矿 Medium and small coal mines in north of Shaanxi Province generally adopt longwall remaining coal pillars support mining.摘要长壁留煤柱支撑法开采是陕北中小煤矿普遍采用的一种采煤方法。 Many small and medium-sized coal mine production safety is still not solve the problem, this issue must not be the existence of trusting to luck, said Zhou Dadi.许多中小煤矿仍然不能解决安全生产问题，在此问题上绝不能存在侥幸心理，周大地说。
随便看	critical literature criticalload critical load critical-load critical load and length critical load current critical load design critical load factors critical loading critical load line critical load of euler critical loads critical localisation critical locus critical longitudinal stress critical loop critical loss critical low frequency oscillation mode criticalluminance critical luminance critical luminance difference critically critically ill obstetric patients critically ill of cardiaovascular disease Critically ill patient