In order to determine the variance as soon as possible, the material price variance is calculated at the time of purchase.
为了尽快得知成本差异，材料的价格差异在购买时便可计算。
In order to determine the variance as soon as possible, the material price variance is calculated at the time of purchase.
为了尽快得知成本差异，材料的价格差异在购买时便可计算。
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