• 活塞环

Pistono皮斯托诺pistonn.活塞piston-type shock absorber活塞式减震器piston type regulating valve活塞式调节阀Piston type fuel supply pump齿轮式输油泵piston type knapsack sprayer活塞式背负喷雾机piston enchased wearing ring镶嵌耐磨圈活塞Piston-liner wear condition活塞-缸套磨损piston reciprocating mud pump活塞往复式泥浆泵piston diameter at ring lands活塞环处的活塞直径piston rod stuffing box gland活塞杆填料函压盖piston typed vacuum generator活塞式真空发生器

1. These bands are called piston rings.
   这些圈叫做活塞环。
2. This occurs especially during ring reversal.
   这种情况尤其发生在活塞环倒向期间。