双面刃端铣刀
two lip end mill
two-lip end milling cutter
可转位插刀双端面研磨机
double disk lapping machine for indexable carbide insert
双刀双掷
DPDT
double pole double throw
DPDT (Double-Pole Double-Trow
Double-Pole Double-Throw (DPDT
双刀双掷开关
double-pole-double-throw switch
dpdt switch
double pole double throw
double-pole double-throw switch
double-point double-throw switch
双刀-双掷开关
double-pole double-throw switch
高速钢端铣刀
high-speed steel end mill