coal mining gateway的用法和樣例：
例句
- A new anchor applied to the stoping tunnel supporting of coal mine is recommended.
介紹了一種用於煤礦回採巷道支護的新型錨桿。 - With the increase of the depth of coal seams mined, rock bursts will easily occur in gateways with fully-mechanized sublevel caving mining.
摘要隨著煤礦開採深度增加，綜放開採回採巷道易發生衝擊地壓危害。
