charging hole
短语词组
- charging g hole 装料管道
- non -charging blasting hole instrument 炮孔疏通器
- oil charging hole 注油孔
- charging hole seat 装煤孔座
- Feed Charging Hole 加料口
- coal charging hole 装煤孔
- hole charging 炮眼装药
- slim -hole charging 药孔
- in -hole chargg method 井中充电 返回 charging hole