顶板控制 meaning in English

strata control

Study on roof control in shallow seam longwall mining
浅埋煤层长壁开采顶板控制研究
Control technology of composite roof in deep well coal bed
深井煤层复合顶板控制技术
Dss of roof control designing based on web
的顶板控制设计决策支持系统
Roof control practice of gob - side entry retaining in 91208 roadway
91208巷沿空留巷顶板控制实践
Talking about the control of moken roof in comprehensive mining working face
综采工作面破碎顶板控制

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