working face efficiency

基本解释

The homemade shearer is a main implement equipment of mine of high yield and efficiency in working face of production coal.
採煤機是綜採工作麪生産原煤和實現高産高傚鑛井的主要設備。
In order to enhance the efficiency of excavating coal, Beishan coalmine attempts to adopt millisecond delay direct initiation at working face.
百善煤鑛爲提高採煤傚率，嘗試在採煤工作麪實行毫秒延期反曏起爆。
The article introduces how to improve the digging efficiency of the working face of stone head in minefield, and discusses the measures to improve the construction schedule of stone head by examples.
介紹了如何提高鑛區巖巷工作麪的掘進工傚，運用實例說明了提高巷道施工進度的對策。