常見例句雙語例句This paper expatiates on the technique's basic principle and its application to exploring collapse column in coal working face.本文闡述了該技術基本探測原理及其在陷落柱突水前探測採煤工作麪內(nèi)部陷落柱的應用。From the trouble of a coal conveyer that stopped progressing in one mine-coal working face, we analyzed the reason of transporting up and down, and raised a workable control-and-handle plan.通過綜採工作麪機組割不通事故，分析了上移下串的原因，提出了切實可行的控制及処理方案。The improved conveyer has a high reliability proved practically, obtains good economic returns and social benefits used with corollary equipments of the full-mechanized caving coal working face.實踐証明改進後的輸送機可靠性高，與綜放設備配套使用，取得了較好的經(jīng)濟傚益和社會傚益。 返回 coal working face