A positive variance indicates that you are ahead of schedule or under budget 正差异表示您提前了日程或花费低于预算。
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Positive variances might enable you to reallocate money and resources from tasks or projects with positive variances to tasks or projects with negative variances 如果是正差异,那么您可以将出现正差异的任务或项目中的钱和资源重新分配给出现负差异的任务或项目。