well sinking的意思|示意
well sinking相关短语
1、 well-sinking 沉井
2、 well sinking machine 掘井机
3、 well sinking detail 井筒下沉
4、 well-sinking technology 沉井技术
5、 large scale well sinking 大型沉井
6、 Discussion on deep-well sinking pump 论述深井潜水泵
7、 sinking well 沉井
8、 sinking well footing 沉井基础