Introduced the prevention methods and practice experience for the sixth pit in Xingshang Coal Mine adopted longwall inclined slicing experence mining method.
英
美
释义
介绍了兴山矿六井采用倾斜分层走向长壁采煤法开采特厚煤层,防治自然发火的经验。
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