已经发生的成本占估计总成本的比例。
The proportion of the costs incurred against the estimated total costs.
相关的已发生或将发生的成本能够可靠地计量。
The relevant costs incurred or to be incurred can be measured in a reliable way.
交易中已发生和将发生的成本能够可靠地计量。
The costs incurred or to be incurred in the transaction can be measured in a reliable way.
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