rock line

The boundary line between ore body and country rock is distinct, being a meso-epithermal filling deposit.

矿体与围岩界线清晰, 属中-低温热液充填型矿床.

Swirling water jet is a high-pressure water through the nozzle from the orientated impeller inside the drill which is a diffusive jet with the three-dimension speed moving along the spiral line and has a particular structural properties and high rock-breaking efficiency.

旋转水射流是高压水经过钻头内部的导向叶轮从喷嘴脱离后形成的具有三维速度、沿螺旋线运动的扩散性射流，其结构特性独特，破岩效率高。

A rock song with a driving bass line.

以强劲的低音和声的歌曲。

It has important meaning to increase the test level of rock deformation and to achieve long-term and on-line monitoring in rock engineering.

这对于提高岩石变形检测水平，实现工程实践中长期有效的在线监测具有重要意义。

The Temporary Support Set in Fully-mechanized Excavation Draft Allocation of Mechanized Operation Line for Rapid Heading in Deep Mine Large Cross Section Rock Roadway

综掘巷道机械化临时护顶装置的研究与应用深井大断面岩巷快速掘进机械化作业线配置

The wall-rock alteration is complex, and the line between orebody and wall-rock is obvious.

围岩蚀变复杂, 矿体与围岩界线明显.

Construction Technology of Short Step and Seven-Step-Paralled-Line-Production of Soft Rock Highway Tunnel with Large Span

大跨度软岩公路隧道短台阶七步平行流水作业施工技术

" Oh , to remain on a Broad flat rock And to cast a fishing-line forever! "

请留盘石上,垂钓将已矣!

The factor that affect the well lane stability has primarily: Round the rock kind, well lane position, tunnel stalk line direction, cross section size, break rock method etc.

影响井巷稳定性的因素主要有：围岩性质、井巷位置、巷道轴线方向，断面尺寸，破岩方法等。

The dual line to the rock field and coal field.

通往落煤昌场和舍石场的复线.