When the bore hole-top-enclosed grouting method is used to conduct high-pressure curtain grouting, shallow weathered broken rock is easy to be split, resulting in excessive grout loss.
采用孔口封闭灌浆法进行高压帷幕灌浆时，对于浅层风化破碎岩体易产生多次劈裂而流失过多浆液造成浪费。
High-pressure oil pan with oil as a window into the cylinder hole of the plunger, the high-pressure chamber was the top of the plunger, the pressure in the oblique plate.
斜盘中心线和缸体中心线相交一个倾角δ。 高压油经配油盘的窗口进入缸体的柱塞孔时，高压腔的柱塞被顶出，压在斜盘上。
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