气环之所以能保持气缸内交高的气体压力,是利用了迷宫式与气体二次密封的原理
气环之所以能保持气缸内交高的气体压力,是利用了迷宫式与气体二次密封的原理
相关考题:
离心式低温液体泵多采用充气迷宫密封,密封气为(),气体压力要高出低温泵的叶轮背压( )左右。A.氧气 0.02MPaB.仪表空气 0.01 MPaC.仪表空气 0.02MPaD.中压氮气0.01 MPa
离心式低温液体泵多采用充气迷宫密封,密封气为(),气体压力要高出低温泵的叶轮背压()左右A、氧气,0.02MPaB、仪表空气,0.01MPaC、仪表空气,0.02MPaD、高压氮气,0.01MPa
单选题离心式低温液体泵多采用充气迷宫密封,密封气为(),气体压力要高出低温泵的叶轮背压()左右A氧气,0.02MPaB仪表空气,0.01MPaC仪表空气,0.02MPaD高压氮气,0.01MPa