... throttle resistance 节流阻力 throttle sleeve 节流套筒 throttle slot 节流隙缝 ...
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Adding air pressure within the annular space between the housing and sleeve can throttle, or close the valve.
在阀体外壳和套管之间的环形空间内施加气压，即可实现阀门的节流和关闭功能。
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