改进

The common method, that all strong-correlation terms of the model are eliminated, can bring the loss in the engineering application, so the new method is proposed that the identified model reserves some correlation. The augmented matrix A is constructed by the outputΔW and the matrix S. The"determinating order based on ratio of determinant"is brought out to screen the strong-correlation terms in the structure identification. The latent root estimation is improved in screening the eigenvalues and eigenvectors. Thus the estimation precision is improved greatly.The consistence check of guidance instrument error coefficients of flight test and ground test is the purpose of flight experiment. The causes of inconsistency of the two models are analyzed. The hypothesis test of linear regression model based on F statistics is proposed to check the consistence.Finally, the instability of error coefficients is probably caused by the change of the flight environments, therefore, the relation between the error coefficients and flight environment is analyzed. The approach is presented to identify SINS guidance instrument error models and compensate the error in the segmented sections corresponding to the change of vertical acceleration of aircraft.

在结构辨识中，常用的方法由于将模型中的强相关项全部剔除而给工程应用带来损失，因此，本文提出了新的有益思想，即在保留一定相关性的基础上进行辨识：将输出向量ΔW与环境函数矩阵S构成增广矩阵A，然后采用"比定阶行列式"来剔除相关向量的方法，这样既可以尽可能多地保留了对落点影响大的强相关参数，又可以对落点影响小的强相关参数给予剔除；在参数估计中，改进了特征根估计中特征根和特征向量的筛选方法，提出"近零"准则，从而大大提高了参数估计的精度；再者，鉴于天地模型"一致性"检验是飞行试验和SINS制导工具误差系数分离的主要目的，因此，本文又深入分析了造成天地模型不一致的原因，提出了采用基于F统计的线性回归模型假设检验方法来进行捷联制导工具误差模型的天地"一致性"检验；最后，鉴于飞行环境剧烈变化可能会对惯性仪表误差系数稳定性带来一定的影响，因此本文深入地分析了SINS制导工具误差系数与外界环境的关系，提出了基于过载变化大小的分段辨识和分段实时补偿的算法。

Of course, this includes improving it, fixing its bugs, augmenting its functionality, and studying its operation.

当然， 这包括改进它，修理它的错误，增添它的功能，和学习它的操作。

The quality of your work augur well for the examination next month.

改进质量后的样品已航邮寄你们，以供检验。

With the homogeneity of household appliance becoming clear,traditional distribution channels of household appliance emerge in many shortcomings and are challenged austerely.

随着家电产品的同质化日趋严重，传统分销渠道的弊端显露出来并接受着严峻的挑战，这就要求家电企业的分销渠道必须从分销渠道结构、渠道功能等方面进行改进和选择渠道模式。

It is proved that this algorithm can produce test case of path coverage testing aut...

对含有非线性谓词、数组的程序实例进行实验，结果表明改进算法能有效生成测试用例。

According to the model, the author forecast the performance level of science and technology expenditure during the future certain years .

本文在前人研究的基础上结合逻辑模型的思想设计了区域科技支出绩效评价指标体系；收集了2000 年－ 2004 年西安的科技支出绩效统计数据；应用灰色系统理论的分析方法模拟出科技支出绩效模型，根据模型预测了未来若干年西安的科技支出绩效水平；通过灰色关联度与聚类分析，获得了决定区域科技支出绩效的因素；针对这些因素提出了改进区域科技支出绩效的建议。

The operation principle and development of fire alarm controller and the problems of traditional fire autoalarm controller existed in application are summarized.

概述了火灾报警控制器的工作原理及其发展以及传统火灾自动报警控制器在工程应用中存在的问题，并就现代火灾自动报警控制器在某些方面的改进方法进行了阐述。

Experimental results show that the proposed method is fast, stable and accurate, and the measuring accuracy of the modified CCD laser autocollimator is improved from 2 arcsec to ±0.25 arcsec in 0.23 s using the proposed method.

实验结果表明，该定位方法稳定性好，定位精度高且实时性强，应用该方法改进后激光CCD自准直仪的测量精度由2"提高到±0.25"，且单次测量时间小于0.23 s，可满足激光CCD自准直仪在小角度测量和瞄准跟踪等领域的高精度实时测量需求。

A key design target for the new model is to have much improved autofocus in movie mode and live view.

一个关键的设计目标，新的模式是有很大的改进自动在电影模式和生活的看法。

Autofocus could be improved in many ways too.

自动对焦可加以改进在许多方面太。

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。