1. If behavior is based on the principle of "lucky trial without error" instead of that of "risky trial and possible error" then all information may be irrelevant, including that legally required. 若行为是基于
2. Municipal Construction Bureau with reference agency management practices, on the trial map quality and the time trial plan, fees and other issues on the trial map units for control. 市建设局参照中介机构的管理办法，对审图质量、审图时间、收费等问题对审图单位进行监管。
3. After the control system had been developed , a lot of trial has been done. It includes the comparative trial, repeated trial etc. 系统开发完成后，做了大量的试验，包括道路阻力设定器的滑行修正试验、比对试验、重复性试验。
4. Big and small of residual error and rule of sign change was observed with inspection method of residual error, and if it had system error or rough error and so on was identified. 采用残余误差观察法观察残差图中各个残余误差大小和符号变化规律，可直接判断有无系统误差。
5. Then system error contains angle measurement error, structure error, assembly error, bearing play etc. is discussed, and the compensation equations are given. 然后研究了综合转角测量误差、结构误差、安装误差、轴承窜动等在内的系统误差，通过计算给出了补偿公式。
