词汇	arc raceway
释义	arc raceway 圆弧滚道
随便看	double commutator double commutator generator double commutator motor double-commutator motor double commutator motor generator double commutator type machine double comparative evaluation double comparator Double comparing method double comparison double-compartment cell double-compartment electrolytic cell Double compensation double-competency construction double-competency teacher double competition double complaint double complex double complexing agents double-complex number weight jamming counteract double complex variables function double component alloy double-component injection mold double component system Double composite beam