Finally, the paper considers that the fully mechanized coal caving mining is helpful to control outburst hazard.
英
美
释义
认为:具突出危险性的厚煤层采用综采放顶煤开采法对消突是有积极作用的.
把海词放在桌面上,查词最方便
触屏版
|
电脑版
©2003 - 2024 海词词典(Dict.cn)
立即下载