【化】 弹簧垫圈

在扳手的平面上握住阀杆(27)并拆卸螺母(51)，锁紧垫圈(46)，隔膜板(60)和隔膜。

steering wheel lock

lock stitch sewing machine

chain stitch and lock stitch

swing lock clasp

cellar door lock

letter lock for pipe switch

mechanical lock

pneumatic lock (compressed-air lock)