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It is known theoretically that to the variational problem with weak constraints in cost functional J, its Euler equation can be discreted into difference format, by using matrix theory and difference method of partial differential equation we know that there exists optimal selection of weight factors in the cost functional under the condition of minimal variance between analysis field and ideal field.

从理论上可知,对于目标泛函J带有约束条件的变分问题,将其Euler方程离散成分形式,利用矩阵理论和偏微分方程的分方法,则目标泛函的权重因子,在分析场和理想场的最小方意义下存在最优选取。

Then the flow coefficient could be calculated. Differential pressure was measured with varied air flow regulated by the valve. Based on the measured data, the relationship curve of the differential pressure and air flow was drawn. It could not be done in the former test platform.

用阀门调节改变流量时,测量出各种不同流量工况下的压,根据测量数据可以求出流量与压关系,绘制出压与流量的关系曲线,此结果在原有的实验台是不能实现的。

Parameter RESOLUTION Offset Error Gain Error Differential Nonlinearity Integral Nonlinearity TEMPERATURE DRIFT Offset Error Gain Error POWER SUPPLY REJECTION RATIO ANALOG INPUTS1 Differential Input Voltage Range Differential Input Resistance Differential Input Capacitance Input Bandwidth VSWR 2 POWER SUPPLY 3 Supply Current IAVCC (AVCC = 5.0 V) IEVCC (EVCC = 3.3 V) IVDD (VDD = 3.3 V) Total Power Dissipation 4

参数解决方案偏移误增益误微分非线性积分非线性温度漂移偏移误增益误电源抑制比1模拟输入;分输入电压范围分输入电阻电容输入带宽分输入电压驻波比2电源3电源电流IAVCC(AVCC = 5.0五)IEVCC(EVCC = 3.3伏) IVDD(VDD的= 3.3伏)总功率耗散4

AIM: To compare the dioptre results obtained by wavefront analyzer and subjective refraction test, respectively, and to evaluate the accuracy and reliability of lowerorder aberrations measured by wavefront analyzer.

目的:比较波前像仪与主观验光法对屈光度检查的结果,探讨波前像仪对低阶像测量的可靠性和准确性。

Then,the second part is the basic facts about the numerical divided differenceand divided difference expansions, Then discussed the error bounds for the remainder term in Floater s divided difference expansions, and offers an pu...

第二部分是数值商公式的基本概念,以及商展开的思想;用初等的方法讨论了Floater中商展开式的余项估计,|R_p|≤k~/k!

But for GLONASS, the double difference equation contains the receiver clock parameter. This made the solving of integer ambiguity of double difference more complex.

对于GLONASS卫星,由于站星双中含有接收机钟项,使得双模糊度的求解变得复杂。

However, in some situations, models are hard to satisfy these assumptions at the same time. We meet a number of random errors with serial correlation and heteroscedasticity in practical problems. The rationality of these assumptions for random errors is doubtable. Therefore, it is necessary to test for correlation and heteroscedasticity in regression, which is an important step of dealing with regression problems and plays an important role in theory and practice.

但实际问题中,回归模型很难同时满足Gauss-Markov的三个假设,人们在实际问题中发现许多随机误出现序列相关和方不同的现象,因此对回归模型的随机误的独立性和方齐性的假设产生了质疑,从而展开了回归模型的相关性和异方检验的研究,它是处理回归问题的重要步骤,在理论和应用上都有十分重要的意义。

In order to compensate for the difference in the height of the cold end center section and the hot end center section and the resulting difference in the distance between the hot and cold center section and between the hot and cold connecting plate duct assemblies, the main support pedestal panels include offsets which extend downwardly along the sides of the cold end center section to meet with the cold end connecting plate duct assemblies.

为了补偿冷气端中心部分与热气端中心部分的高度,以及由此带来的热气和冷气端中心部分的距离以及冷热气端连接板管道系统间的距离,主承重支座板上有一偏移量,它沿着冷气端中心部分的侧面向下延伸直到与冷气端连接板管道系统相连。

To the emmetropia eyes, the negative spherical aberration of nature lens can compensate the plus spherical aberration of the cornea to reduce the whole spherical aberration of the human eye and keep a better vision.

一般对于正常眼来说,晶状体的负球可以部分补偿角膜的正球,从而降低整个人眼光学系统的球,以保证较好的视觉功能。

ANOVA for detecting QTL effect and epistasis was studied. The statistic and genetic expectations of various variance components in different ANOVA were deduced.

研究了各类作图群体的QTL效应及互作检测的方分析法,推导出了其各种方分析中方分量的生统遗传学期望。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。