The permeability of coal increased at a faster rate when the unloading speed was larger.
卸围压速度越大，煤岩的渗透率增大的越快。
The two-position operating mechanism brings convenience for unloading observation and reasonable control of unloading speed.
双位置操作机构，方便观察卸料情况，合理控制卸料速度。
This high strength aluminum alloy robot is equipped with linear slide rail, so it has fast loading and unloading speed, low vibration and high wear resistance.
使用高强度铝金手臂配合线性滑轨，上下速度快，震动小耐磨耗。
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