length difference

• 长度差

length difference的用法和样例：

例句

1. It wants one inch of the regulation length.
   长度比规定的还差一寸。
2. So computing the difference of two-tape length of erased magnetic record can find out the lightning max steepness.
   故计算两条磁带的消磁长度差可直接测出雷电流最大陡度。