This essay presents the statistical analysis of reinforced concrete structures on the main line of defects and section dimension deviations in cast - in - site concrect structure . moreover , the allowable for construction quality errors are checked 本文以混凝土结构工程的外观质量缺陷和尺寸偏差调查为主线，对我国现浇混凝土结构工程的施工质量进行了调查分析。
Namely , we test the normal workspiece firstly and save its measure value in the ems memory , and then we test the measured workspieces one by one and work out the size deviation . the measurement of 3d size adopts the principle of cross measurement 二维尺寸测量采用相对测量的方法，通过对标准工件的测量并将其结果储存于内存中，再逐一对被测工件测量，得出被测工件的尺寸偏差。
An introduction was made to the foundry method of cy4d series diesel engine cylinder block and head , as well as the quality problems met during the trial production and their prevention measures including : leakage of cylinder head ; dimensional deviation of block after machining and cylinder cores cracking 摘要介绍cy4d系列柴油机缸体的铸造工艺特点，试制过程中出现的包括缸盖渗漏、缸体加工尺寸偏差和缸体缸孔穿芯等质量问题，以及相应的解决措施。
It has shown by the uncertainty of the data of fatigue experimentation and the size deviation of machine accessory and structure component and the original defect of materials that all of the stress and intensity and the factors that affect them are stochastic variables , so we should deal with the problem of fatigue by the method of probability and statistics to making the engineering life deduced by fatigue intensity to be the reliable life under a certain probability 疲劳试验数据的离散性，零件和构件加工允许的尺寸偏差，材料中分布的原始缺陷，以及受载零件危险部位应力响应的分布特性等，都说明应力和强度以及影响它们的因素都是随机变量，它们有各自的分布形式，应该用概率统计理论和方法来处理，才能使疲劳强度在工程中所确定的寿命，成为保证某一概率下的可靠寿命。
Abstract : using furan sand to produce heavy diesel engine block and crankshaft eliminated defects of castings including “ penetration / burn - in ” , “ shrinkage porosity ” , “ big dimension deviation ” of cylinder block , “ penetration / bum - in ” , “ misrun ” and “ run - out ” of crankshaft , and so on 文摘:树脂砂铸造工艺应用于大型球墨铸铁件整体铸造柴油机缸体、曲轴生产上消除整铸缸体“粘砂” 、 “缩松” 、 “尺寸偏差大”及曲轴“粘砂” 、 “浇不足” 、 “漏铁液”等铸造缺陷，具有明显的效果。
