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- Methods 25 state owned coal mines and 34 small coalpits in Anhui were investigated.Results Pneumoconiosis was the major occupational disease. 方法采用职业流行病学方法对淮北、淮南矿业集团25个国有煤矿和全省34家小煤窑的职业卫生状况进行调查研究。
- Equivalent Recovery Ratio And The Analysis of The Influencing Factors of Recovery Ratio in State Owned Coal Mine 当量采出率与国有重点煤矿采区采出率的影响因素分析
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- We don't make our own cars or burn our own coal. 我们既没有制造我们自己的汽车，也没有燃烧我们自己的煤炭。
- The State shall protect the sound development of State-owned coal mines. 国家保障国有煤矿的健康发展。
- state- owned coal mines 国有煤矿
- Some coal mines had to shut down. 有些煤矿不得不关闭。
- Many coal mines are careless with worker safety. 很多煤矿对工人的安全问题根本不管不顾。
- I think we are very short-sighted in not exploiting our own coal. 我以为没有开发利用自己的煤矿是目光短浅的行为.
- There are many coal mines in the north. 北方有许多煤矿。
- There was a terrible blast in the coal mines. 矿坑中发生了可怕的爆炸声。
- Coal mines have given collectors good samples. 煤矿给(化石)收集者提供了很好的样品。
- Foul or poisonous gas that sometimes pollutes the air in coal mines. 矿井瓦斯，有毒气体矿井中有时污染空气的恶臭气体或有毒气体
- The State shall take special protective measures for miners working in underground coal mines. 国家对煤矿井下作业的职工采取特殊保护措施。
- They underwrote the coal mine's bonds. 他们同意买下该煤矿的未认购的股票。
- There is a coal mine near my home town. 我的家乡附近有一个煤矿。
- The coal mines of North China are centred in Shanxi Province. 华北的煤矿集中在山西省。
- He tried to regularize the management of coal mines. 他试图将煤矿的管理系统化。
- Those counterfeiting, transferring or using other than their own coal production license. （四）伪造、转让或者冒用他人煤炭生产许可证的。
