线电荷密度（Charge Line Density）： 面电荷密度（Charge Area Density）： 2 0 / lim m C S q S S Δq是面积元ΔS上的电荷。
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line charge density 线电荷密度
Pre-splitting blasting experiments were carried out to obtain normal pre-splitting blasting parameters such as hole diameter, hole space, gun- powder charge line density, and uncoupling factor.
通过大量的预裂爆破试验，得出了适用于该边坡的炮孔直径、炮孔间距、线装药密度、不耦合系数等一系列常规预裂爆破参数。
Power particles can be charged highly when they re transported in a pneumatic line, This paper advances a method by which to measure powder particle charge density.
在管道内用气力输送粉状物体，能使粉体粒子带上电压很高的静电。
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