The paper emphatically analyses the interaction between the wall stress characteristic and coal getting by impact on the longwall face, proposes the work pattern of coal breaking by impact.
看重分析了长壁采煤工作面煤壁应力特点和冲击劈裂式采煤的相互作用关系，提出了冲击破煤的作业方式。
The characteristic is provided with inheritance unlti_periods and difference, and its main form is interrupted sinking and a series of movement breaking tape is formed.
其特点是具有继承性、多期性和差异性，主要表现形式为间歇性下沉，并形成了一系列活动断裂带。
The influence of breaking current on arc characteristic is also measured.
在变弧隙燃弧情况下，测量刚分电流对电弧特性的影响。
The time domain reflection measurement is an advanced and universal test method. Through this approach, the characteristic impedance and the breaking point of the wire can be detected.
时域反射测量是一种技术先进、应用广泛的测量方法，它能有效的测量出线缆的特征阻抗并且确定出断点的位置。
The ambience has a critical effect on the characteristic of bead formed by fuse breaking of the electric copper wire in fire.
火灾中短路发生时周围的环境气氛对短路时导线上形成的熔化痕迹特征具有决定性影响。
The ambience has a critical effect on the characteristic of bead formed by fuse breaking of the electric copper wire in fire.
火灾中短路发生时周围的环境气氛对短路时导线上形成的熔化痕迹特征具有决定性影响。
应用推荐