Plain Ring and Snap Gages for checking the major diameter.
普通环规与卡规是为了检测大径。
Checking the abrading of piston ring and cylinder slecve condition and air cyclo - tie is burnt or splits a condition;
检查活塞环与汽缸套的磨损情况及气环结焦或断裂情况；
Checking the abrading of piston ring and cylinder slecve condition and air cyclo - tie is burnt or splits a condition;
检查活塞环与汽缸套的磨损情况及气环结焦或断裂情况；
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