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- A new type of porous sound absorbing material was made from super-strength gypsum and glass fiber.
摘要以高强石膏为胶凝材料，内掺玻璃纤维，制备出一种新型多孔吸声材料。 - The paper describes a commercial test of pumping stowing material for roadway rib support in a large cross-section roadway in Jinggezhuang Mine,Kailuan.
总结了综采大断面巷道泵送高水速凝材料护巷技术在开滦荆各庄矿的工业性试验情况。
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