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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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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