large coal meaning in Chinese

大块级煤

Information network construction of large coal enterprises
大型煤炭企业信息化建设
Discovery of dacheng large coal gas field and its meaning
冀中大城大煤气田的发现及其意义
The design of computer integrated monitoring system for large coal - preparation plant
大型选煤厂计算机集成监控系统的设计
Tight bottom and large coal forming causes and countermeasures in antaibao opencast
安太堡露天矿产生根底与大块的原因及防治措施
Implementing circular economy to promote sustainable development of large coal enterprises
实施循环经济推动大型煤炭企业可持续发展

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