电枢绕组导线的有效长度
active length of armature winding
T形件有效长度
effective length of T-stub
车架有效长度
chassis frame useful length
door width
光通道有效长度
amicable orthogonal design
轨道有效长度
effective length of track
接收天线有效长度
effective length of receiving antenna
四极磁铁有效长度
The effective length of a quadrupole