gob of fully mechanized top-coal workface

• 综放采空区

gob of fully mechanized top-coal workface的用法和样例：

例句

1. 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。