preventer

n.

妨碍物；

blowout preventer防喷器；消火花预防装置

backflow preventer回流防止器；防止回流设施

Blowout preventer
Backflow preventer
Blowout preventer with tubing shear rams
Role of chemopreventers in human diet.
Position Indicator for a Blowout Preventer
Pipe shearing ram assembly for blowout preventer
Leakage Monitoring of Subsea Blowout Preventer Control System
Success-producer and failure-preventer marketing skills: A social learning theory interpretation
Backflow preventer has valve housing which has two separated annular grooves arranged outside in flow direction whereby seal rings a...
A text message programme designed to modify patients’ illness and treatment beliefs improves self-reported adherence to asthma prev...