平替

浅孔留矿法平立交替控制爆破技术研究

Study on alternation of horizontal and vertical controlled blasting technique in the application of short hole shrinkage method

三切分工艺在平-立交替轧机上的开发与应用

Development and Application Three-slitting Rolling Process at Horizontal-vertical Rolling Mills

方法：用上颌平斜导板治疗替牙期儿童不良习惯及其所导致安氏Ⅱ类Ⅰ分类错8例。

Methods : Using maxilla flat and inclined bite plate to treat 8 cases of this kind of children .

损害过程完成后，也不需取出岩心，而是通过换向阀门改变流体的流动方向，再由平流泵驱替液体，测量储层岩心受损害后各段的渗透率值。

After the process finished , also without taking the core out , the permeability of each section of the damaged core can be measured by the constant flow-rate pump driving the fluid after the reversal valve alters the flowing direction of the fluid .