working face efficiency

基本解釋

The homemade shearer is a main implement equipment of mine of high yield and efficiency in working face of production coal.
采煤機是綜采工作面生產(chǎn)原煤和實現(xiàn)高產(chǎn)高效礦井的主要設備。
In order to enhance the efficiency of excavating coal, Beishan coalmine attempts to adopt millisecond delay direct initiation at working face.
百善煤礦為提高采煤效率，嘗試在采煤工作面實行毫秒延期反向起爆。
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.
介紹了如何提高礦區(qū)巖巷工作面的掘進工效，運用實例說明了提高巷道施工進度的對策。