螺旋转动

screw

screw magazine

coach screw

lead screw cutting lathes【机】;lead screw lathe【机】;lead screw turning machine【机】

chasing tool【机】;screw tool【机】;threading tool chaser【机】

propulsion with ground-engaging cylindrical screw drives

kneading screw (kneading worm)

screw cap【包装】