A.0.1~0.2mmB.0.2~0.3mmC.0.1~0.3mmD.0.3~0.5mm
A.空氣室壓力無需排空B.空氣彈簧試驗合格后C.空氣彈簧保壓試驗中D.以上都需要
A.15minB.10minC.20minD.5min