【运输】螺旋输送器用于输送自由流动

ampere's right-handed screw rule

acme screw thread【机】;trapezoidal thread【机】

electric screw driver【机】

put the screw on sb.

double screw-teeth bit【木】

screw-plug fuse

screw type bit (screw auger)

draw-screw【机】;lifting screw【机】