ore pass meaning in Chinese

放矿溜道
放矿溜井

The technical reform of main ore pass system in shizishan copper mine
狮子山铜矿主溜矿井系统的技术改造
The impact air flow in ore pass
溜井的冲击气流
Gravity ore pass
重力放矿溜道
A summary introduction is made of the electrovibrating ore - drawing techniques that have been used in shizishan copper mine , which includes the electrovibrating ore drawing of the ore pass in middle section , the one for in - stope ore drawing , the one for the main underground ore bin and the one for the coarse ore bin in the concentrator
针对狮子山铜矿应用中的几种电振动放矿技术进行了总结性介绍，它们分别是：中段溜井电振动放矿、采场内电振动放矿、坑下主矿仓电振动放矿、选矿厂粗矿仓电振动放矿。