three-start screw

Three-three-two pattern

dynamic three-screw reactive extruder

Six-three-three

Six-three-three plan

Three Screw Pump

three start thread

three-screw pump

three-start single-pump

three-start thread

double start screw thread

one start screw

two start screw

two-start screw

three-throw turnout；symmetrical three throw turnout；three-way turnout

AC three phase three wire insulated system

AC three phase three wire system with earthed hull as neutral wire

alternating current three phase three wire insulated system

alternating current three phase three wire system with earthed hull as neutral wire