由于液压挺杆自动调节气门间隙为零间隙，同时可降低发动机噪声。
Because the hydraulic valve plunger automatic control valve clearance is zero gap, simultaneously may reduce the engine noise.
由于液压挺杆自动调节气门间隙为零间隙，同时可降低发动机噪声。
Because the hydraulic valve plunger automatic control valve clearance is zero gap, simultaneously may reduce the engine noise.
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