釜用机械密封试验装置
Test Device for Mechanical Seals for Agitators
报时机械装置
time indicating mechanism
串联机械密封
series connection mechanical seal
单端面机械密封
single mechanical seal
single terminal machinery sealing
非常规机械密封
non-conventional mechanical seal
非接触式机械密封
Non contacted type mechanical seal
non-contact mechanical seal
non-contacting mechanical face seal
non-touchable type mechanical seal
no contacting mechanical face seal
Non-contacting Mechanical Seal
改进环保型机械密封
improvement environmental protective mechanical seal