| 释义 | Hand screw
 |  | a small jack for raising heavy timbers or weights |  | (Carp.) | a screw clamp. | 
 See also: Hand, Hand Hand screw
 Hand screwA clamp with two parallel jaws and two screws used by woodworkers; the clamping action is provided by means of the screws, one operating through each jaw.screw clamp screw clamp  Any clamp set by means of a screw, but esp. one used in woodworking which has two large parallel jaws for holding the work to be pressed together. |