... ball case cover 滚珠轴承压盖... ball check nozzle 球形止回喷嘴... ball check valve 球形止回阀;球式单向阀;球形节流阀...
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ball-check nozzle 球式止逆注嘴
The control valve comprises an oil nozzle and a check valve. The check valve comprises a valve ball and a valve seat.
本控制阀包括油嘴和单流阀，单流阀包括阀球和阀座。
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