coal pit meaning in English
煤矿坑，竖井；〔美国〕炭窑。
Examples
- He has to work in coal pit
他必须到小煤窑背煤。 - Practices on exploring coal pit c oft by electrical prospecting technology
应用电法勘探技术勘查小窑采空区的初步尝试 - Ventilation and gas management during district rise passing through gob of small coal pit
火铺矿21采区2031采面排水系统的改造 - Today he looks clean and attractive that ' s because the small coal pit has been closed and now , he lost his job
今天他看上去很干净、很光鲜，是因为小煤窑已经被整顿关闭，他无活可干。 - Establishing the safe and utility orientation system of the mine personnel in coal pit is of great significance for improving the safe production management of the coal pit
摘要建立可靠实用的煤矿井下人员定位系统，对改善煤矿的安全生产管理有着重要的现实意义。