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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The result showed that the deviation between metered quantity of additives in cement and test result was less than 0.6%. This means that the method is feasible.

试验表明，测定方案可行，酸不溶物的测定结果与实际混合材掺量的偏差<0.6%。

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The moire fringes can be seen at an infinite distance, and its shape not only shows the direction to be corrected but also gives the deviation, distance in definite quantity.

在无穷远处观察到的莫尔条纹其形状不仅指明了应修正的方向，并可定量的给出偏差距离。

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