labour efficiency variance造句

例句与造句

1. There are two kinds of labour variances . " Labour Rate Variance " is the difference between the standard cost and the actual cost paid for the actual number of hours . " Labour efficiency variance " is the difference between the standard labour hour that should have been worked for the actual number of units produced and the actual number of hours worked when the labour hours are valued at the standard rate.
2. It's difficult to find labour efficiency variance in a sentence. 用labour efficiency variance造句挺难的