Coal mine underground hydraulic punching blowout prevention hole and coal quantity metering device
WU SHUAIDONG, SHAN YONGKE, MA LIWEI, ZHANG ZHIFENG, XU GANG, WANG NIANHONG, LIU XIAO, PENG LAIDONG, LUO FEIFEI
Year of Publication 31.12.2021
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Year of Publication 31.12.2021
Patent