保水开采
基于1个网页-相关网页
water-preserved mining 保水开采
water-preserved mining technology 保水开采技术
water-preserved coal mining 保水采煤
Aiming at the problem of drought and water shortage in north Shaanxi, we analyzed principles for designing room and pillar water-preserved mining method.
针对陕北干旱缺水的实际,分析了房柱式保水开采的设计原则。
youdao
应用推荐
模块上移
模块下移
不移动