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 quantitydeviation.
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；
2
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%。
3
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.