front entry是什么意思

网络释义

用法例句

Study on Roadway Bolt-Mesh Supporting Technique in High Angle Fully Mechanized Caving Face of Wangjiashan Colliery;

王家山矿大倾角综放工作面平巷锚网支护技术研究

The tunnels connecting them, usually at right angles, are crosscuts.

连接平巷、一般与平巷成直角的巷道称为石门。

The end of a gallery or drift.

水平巷道或小平巷的一端

A gallery or drift in a mine.

矿井中的水平巷道或小平巷

pillar of ground

运输平巷上方的煤柱

Hirschback method

上部平巷排放沼气法

horizontal underground passage in a mine

（矿坑中的）水平巷道.

A horizontal or nearly horizontal passageway in a mine running through or parallel to a vein

水平巷道穿过矿脉或与矿脉平行的矿井中水平或近似水平的巷道

A level in a mine driven so that it intersects a vein of ore.

石门，横巷矿井内掘出的平巷，它与矿脉相交

The Study of the Celerity Single Tunneling Technique of the Horizontal Tunnel in the Second Shizuishan Mining;

石嘴山二矿水平巷道单巷快速掘进技术研究

at different levels beneath the ground horizontal tunnels are excavated in order to reach and follow the vein. These tunnels are called drifts;

在地下不同的水平，开拓有许多水平巷道以通向矿脉并随矿脉延伸。这种巷道叫作平巷;

Hardypick drifting machine

哈迪皮克型平巷电钻机组

A passage or gallery in a coal mine.

通道煤矿中的通道或水平巷道

mechanized heading development

机械化平巷开采中厚煤层法

The lengths of the probes used in horizontal hole in potassium mines were up to 200m.

钾盐矿井水平巷道使用的探头长度达到200米。

Discussion on Excavation of Drift Using Medium-to-Long Hole Blasting In Xiangtan Manganese Mine

湘潭锰矿推广应用中深孔爆破掘进平巷的探讨

Study on Key Technology of Heading of Fully Mechanized Caving Faces in Steeply Dipping Seam;

大倾角综放工作面平巷综掘关键工艺技术研究

Speed Construction Technology in Rocky Level Gallery by Using Mechanized Operating Line with Trackless Rubber Wheel Vehicle

岩平巷无轨胶轮车机械化作业线快速施工技术

On the Applications of Trackless Rubber-Tired Carts to Inclined Shaft Transforming into Horizontal Laneway

浅谈无轨胶轮车在斜井转平巷施工中的应用