试验误差

Research also shows that in different test condition, sensitivity, accuracy, and stability of bending creep test at 0 C are better than that of bending test at -10C. Thus, bending creep test at 0C can preferably evaluate the crack resistance of asphalt mixture at low temperature.

结果表明，老化过程大大降低了沥青混合料的低温抗裂性能，0℃弯曲蠕变试验比-10℃弯曲试验对不同的试验条件的区分度更大，试验误差更小，稳定性更好，可较好地评价沥青混合料的低温抗裂性能。

The test results of 20 blood samples detected on different hematological analyzers were analyzed by a q test which indicated that there were no statistical differences between blocks（P＞0.05）. The correlative coefficient was over 0.97 and the relative deviation was within the range of allowable error.

白细胞分类中，中性粒细胞和淋巴细胞在各比对仪器之间以及仪器与手工分类之间的相关性较好，而嗜酸粒细胞、嗜碱粒细胞和单核细胞，不论在各仪器还是仪器与手工分类之间，都存在较大的试验误差（P＜0.05，P＜0.01）。

Test results show that the bench test error is less than 2%.

试验结果表明，台架试验误差小于2%。

According to Principle of quiescent sedimentation granula analysis, the densimeter method and the piette method are used to get the size grading of fine-grain soil and the errors of two methods are analyzed.

根据静水沉降颗粒分析法计算公式原理，分别采用了常用的密度计法和移液管法求取细颗粒土的粒径级配，分析了两种方法试验误差产生的原因，并证明密度计法较移液管法具有更简便、准确、节能的特点，建议尽量采用密度计法。

In order to eliminates the influence of the interaction of structures, realizes the most optimized control of system, minish error of the structural pseudodynamic test, the paper achieve decoupling controlling of multivariable electro-hydraulic servo system by adopting the method of diagonal matrix based on the sutra control theory.

为了消除结构耦合的影响，实现对系统的最优化控制，减小结构拟动力试验误差，本文以经典控制理论为基础，采用对角矩阵法来实现多变量伺服系统的解耦控制。

This paper is concerned with two problems: First, a formula is derived to estimate the error of system identification from the autoeorrelative function of stationary random disturbances and that of pseudo-random sequences. It can be used to select the type of pseudo-random sequences to be used for quick identification with a given error.

本文讨论了两个问题：(1)导出了平稳随机干扰的自相关函数、伪随机序列的自相关函数和系统脉冲响应辨识误差之间的定量关系式，可用来选择伪随机序列和估计试验误差。

This paper describes a demarcation and decoupling technology of helicopter bearingless tail rotor flexible beam,this technology can be used to solve the problem of flapping bending moment and lag bending moment coupling that encountered in bearingless flexible beam fatigue test,it also can be used to separate each test load component on the section effectively and to reduce the test error.

本文介绍了一种直升机无轴承尾桨柔性梁标定与解耦技术，该技术能有效地解决无轴承尾桨柔性梁在试验中挥舞弯矩与摆振弯矩的耦合问题，并能有效分离截面上各分项试验载荷，减少其试验误差。

The results from an example showed that the unbiased estimate of error variance could be obtained so that polygenic variance and polygenic heritability could not be underestimated. Moreover, the AIC values by using the average of two replications were less than that by using the observations of a replication.

在试验设计为重复内分组随机区组设计时，通过甘蓝型油菜初花期的遗传分析表明：这种方案的试验误差方差估计值无偏性好，可避免多基因方差和多基因遗传率被低估；重复观测值平均数的分离分析的AIC值低于利用单一重复资料的AIC值。

After studying analysis of variance on single factor and double factor,this paper reveals that if the difference between levels of the primes exist noteworthily is mainly depended on the sum of its experiment effects or variance of experiment effects and stochastic difference.

0引言 在试验设计时设置重复试验，能够估计试验误差；重复试验次数越多试验误差越低，试验精确度越高。一般认为，适宜重复次数应保证使误差项自由度至少为12，否则F检验或t检验的临界值上升很快，难以呈现显著性川。

To analyze the experimental results, the four operating conditions that influence mean particle size and size distribution, filtration time and the rate of hydrolysis of titanyl sulfate solutions are evaluated, four fitting models between responses and its influence factors are obtained. Optimum operating conditions are predicted. An experiment for validation of predicted conditions was carried out, and confirms the estimations are correct.

利用响应面试验设计软件来辅助设计，根据实际的输入与响应的结果，研究了搅拌速率、加料速率、加热速率和底水量对水解产物的粒度及粒度分布、过滤时间和硫酸氧钛的水解率的影响，推导了四个因素对四个响应的数学模型，分析其试验误差，最后得到优化试验的预测结果，用于指导实际的生产过程。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。