Change is outside the list of engineering quantity; supplied engineering geology datum and hydro-geological data don't agree with practical condition.

不属于工程量清单范围内的变化，提供的工程地质资料、水文地质资料与实际不符而增加的工程量。

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Abstract:First, based on the incomplete contract theory, summarizes the main factors of difference of quantities that including the engineering change, List missing item and quantity deviation.

摘要：首先，基于不完全契约理论，总结引起工程量差异的工程量清单缺项、工程变更等主要因素；

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