它提高了安全性，减少了潜在的连接故障，并在柱塞行程过程中使得环境暴露最小化。
It enhances safety, reduces potential connection failure, and minimizes environmental exposure during plunger trips.
可借助于简单的多位置的机械式停止柱塞(16)限制气动活塞(12)的行程。
Pneumatic piston 12 travel can be limited by means of a simple multi-position mechanical stop plunger 16.
加臭泵是专门设计的隔膜式柱塞计量泵，柱塞的运动行程机械锁定，每次输出量保持恒定。
Odorization pumps are specially designed diaphragm plunger metering pump, plunger travel of the exercise machine lock, each time to maintain a constant output.
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