常見例句雙語例句The effects of different drawing intervaland top-coal fragmental size on flow character of coal-gangue and sand, and on mixed degree of coal and gangue were analyzed during drawing top-coal.分析了不同放煤步距、頂煤塊度對放煤過程中煤矸砂流動形態(tài)、混矸程度的影響。The influence of coal gangue and the activator on the hydration property of cement is studied in this paper.研究了煤矸石的種類、摻量以及化學(xué)激發(fā)劑對水泥水化性能的影響。 返回 coal and gangue