有效长度effective length详细»
有效长度active length详细»
有效长度active length of armature winding;effective length详细»
有效长度effective length详细»
有效长度action length;active length of armature winding;usable length;useful length详细»
有效长度〔名词〕effective length详细»
有效长度effective length详细»
有效长度effective lenthe;rolling length详细»