单词	updates
释义	同update
随便看	piston pressure gage piston pressure gauge piston pressure-vacuum gauge piston puller piston pump piston pump of wind turbine piston reducing valve piston rib piston ring piston ring axial clearance piston ring belt piston ring breakage piston ring gap piston ring gap clearance piston ring gap clearance; piston ring joint clearance piston ring gap elearance piston ring groove piston ring joint clearance piston ring joint clearance--piston ring gap clearance piston ring land piston ring oil hole piston ring pliers piston ring set piston ring sticking piston rod