fully mechanized sub-level caving

• 综放

fully mechanized sub-level caving的用法和样例：

例句

1. With the increase of the depth of coal seams mined, rock bursts will easily occur in gateways with fully-mechanized sublevel caving mining.
   摘要随着煤矿开采深度增加，综放开采回采巷道易发生冲击地压危害。
2. According to the need for study on methane movement law in fully mechanizedsublevl caving stopes,the methane rising and pressure diffusion theory is put forward.
   依研究综放采场瓦斯运移规律的需要，提出矿井瓦斯气体浮升与压强扩散理论。