Xie Yanxin, is one ordinary coal miner in Xinzhuchun Company, Jiaozuo Coal Group, HNCC.
谢延信是河南煤化焦煤集团鑫珠春公司的一名普通矿工。
It is a difficult problem to recognize the Yanxin cave-fractured reservoirs in southeast Sichuan.
川东、南地区阳新统缝洞储层识别是一难题。
It is a difficult problem to recognize the Yanxin cave-fractured reservoirs in southeast Sichuan.
川东、南地区阳新统缝洞储层识别是一难题。
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