词汇	Costus speciosus
释义	Costus speciosus 闭鞘姜
随便看	step down substation step-down substation step-down switching-converter step down switching current regulator step-down switching current regulator step down switching voltage regulator step-down task Step-down technique step down test step-down test step down the ladder step down to step-down transformation step-down transformator stepdown transformer step down transformer step-down transformer step-down-transformer step -down transformer step-down transformers step-down treatment step-down turn ratio step down turns ratio step-down turns ratio step down voltage regulator