Engineering cost has the feature of multi-valuation which is really a course of gradual deepening and refining and is close to the fact progressively.
工程造价具有多次性计价特征，它是一个逐步深化、逐步细化和逐步接近实际的过程。
Engineering cost has the feature of multi-valuation which is really a course of gradual deepening and refining and is close to the fact progressively.
工程造价具有多次性计价特征，它是一个逐步深化、逐步细化和逐步接近实际的过程。
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