乘法

The number of errors in decimal place of mathematics students are more than that of normal students.

六、在小数的乘法计算，数学学习障碍学生较普通学生在计算小数位数上发生错误。

Thus, every member of UIO education is willing to dedicate oneself into our business.Our account bill carry on the principle of "addition, subtraction, multiplication and division". Addition means that we must provide the value added service to our customers, and exceed the customer's expectation; Subtraction means that we must refuse the waste inside the company; Multiplication means that we must insist to have a strong teamwork, share with everyone to gain the mutually promotion; Division means that we must refuse any illegal, wrongful or dishonest cooperation.

我们企业的账目清单执行"加减乘除"发展--"加法"：始终坚持为客户提供更多的增值服务，超越客户的期望；"减法"：始终坚持拒绝企业的内耗、最大程度的减少客户的损坏；"乘法"：始终坚持成员之间的紧密协作，优势分享，相互促进，实现企业与合作伙伴的资源共享、联盟合作；"除法"：始终坚持废除无意义的浪费，排除一切非法的、不正当的、不诚信交易与合作。

In order to realize this target, the compression behavior of SC100-T6 aluminum alloy was studied under the circumatance of different deformation temperature and deformation strain ratio using the Gleeble 1500 thermal stress-strain simulator. The constitutive relationship of this kind of Al-alloy was established using the least squares fit method.

为了实现这一目的，作者应用Gleeble-1500热力学模拟试验机对不同的温度和变形速率下的铝合金SC100-T6进行等温压缩试验，得到了合金的流动应力与成形温度、应变速率的变化规律，并应用最小二乘法建立了该种合金的本构方程。

Another important research work is the software design. We use the least square method in the software to demarcate the systematic error.

此外通过设计并使用了基于最小二乘法理论的软件标定程序，我们对系统误差进行了矫正，提高了系统的测量精度和准确性。

Ionic liquid; density; vibrating tube densimeter; least square; fitting

中文关键词：离子液体；密度；振动管密度计；最小二乘法；关联

By using a vitrating digital densimeter (DMA602/60), the densities of glycine and alanine in aqueous methanol, ethanol and propanol solutions were measured at 298.15 K, and the apparent molar volumes calculated. According to McMillan-Mayer approach, the volumetric interaction coefficients were evaluated.

用DMA602/60型震动管数字密度计测定了298.15 K下甘氨酸、丙氨酸分别在纯水和四个不同浓度甲醇、乙醇和丙醇水溶液中的密度，计算了相应的表观摩尔体积，用最小二乘法拟合了氨基酸在醇水溶液中的标准偏摩尔体积。

At same time simplex method,nonlinear least-squaremethod and DFP and BFGS and so on were used to design three-layerand five-layer coatings.

同时利用单纯形法、最小二乘法、二次规划法、最速下降法、DFP法、和BFGS法优化设计了三层增透膜系、五层膜系。

We estimate the parameter with least square method according to the difference equation

我们根据差分方程用最小二乘法来估计参数。

Through the comparison with other learning methods, the conclusion is drawn that the Powell method in which the derivative is replaced by the difference quotient is an eff...

通过与其他学习算法的比较，得出结论：其中用差商近似代替导数的Powel法是一种高效、快速的学习方法，其学习速率比带动量项的学习率自适应的BP算法高一个量级，而比DavidenFletcherPowel、BroydenFletcherGoldfarlShanno等变尺度方法以及其他非线性最小二乘法的稳定性要好得多。

The weight values in NLSM were adjusted automatically according to target data, which allowed the measured data with different dimensions or ranges to be treated at the same level, and thus the accuracy and stability of algorithm were improved accordingly. Derivative was replaced by the difference quotient in NLSM which further improved the algorithm speed.

非线性最小二乘法的权值根据目标数据自动调整，使得不同量纲和不同数值范围的观测数据可以在同一水平上进行，提高了计算的精度和稳定性；另一方面用差商近似代替导数加快了算法的收敛速度。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。