什么时候我们用乘法和除法?。
在有些情况下，除法表达式可以用乘法表达是来重写。
Sometimes, such expressions can be rewritten by replacing the division by a multiplication.
用乘法怎样算？
用加法爱人，用减法怨恨，用乘法感恩，用除法解忧。
Love with addition, subtraction resentment, multiplication of gratitude, the division of melancholy.
我们可以用，矩阵乘法或矩阵乘积的形式来表述这些式子。
And we can reformulate this in terms of matrix multiplication or matrix product.
我年纪还小时，我的祖父用这个教我的乘法表。
My grandfather used this to teach my multiplication table when I was little.
我们学过矩阵乘法的，以及用矩阵表示线性方程。
OK, so we've seen how to multiply matrices, and how to write linear systems in matrix form.
用这两种方法推导的结果与测量平差书上按最小二乘法推导的结果是一致的。
The result obtained from these two method corresponds with that from the least squares method in the books of survey adjustment.
本章的目的在于向读者介绍用数字技术实现二进制乘法的各种方法。
The purpose of this chapter is to provide the reader with repertoire of digital implementation techniques of binary multiplication.
动力学方程中的参数用线性最小二乘法估计。
The parameters of the kinetic equation were estimated by the linear least square method.
用最小二乘法求出了刀具拟合直线，并对拟合直线进行了修正，保证了修正后的创成表面与原拟合直线创成表面相吻合。
The cutter curve is fitted with the least square method and corrected to assure the corrected generation surface is identical with that of original fitted curve.
用线性最小二乘法、迭代法以及二分法与最小二乘法相结合的方法，以积分方程、微分方程和放热速率方程拟合dsc数据。
The DSC data obtained are fitted to the integral, differential and exothermic rate equations by linear least-squares, iterative, combined dichotomous and least-squares methods, respectively.
用加法、跳跃计数和乘法解答以下各题。
Solve each problem by addition, skip-counting and multiplication.
谱峰分解法系以每种钒氧化态的标准谱形函数为基础，用最小二乘法求解。
The peak resolution method is least square method based on the standard spectral profiles corresponding to each oxidation states of vanadium.
相关处理乘法可简单地用伪随机门控采样(模拟)或伪随机控制数据保留与剔除(数字)方法实现。
The multiplication of correlation could be implemented just by pseudo random gating sampling (analog) or data reservation control and rejection (digital).
用最小二乘法拟合了库区地壳形变多年的变化趋势，计算了多年平均形变速率。
The least square method is applied to study the deformation tendency and calculate the mean annual rate of deformation.
给出了用两端点法、最小二乘法对平面内的直线度进行综合评定的方法。
This paper presents the integrated evaluating method of line error in a plane by two endpoint and least square method.
文章中将所有参与竞价的发电厂商等值为一个虚拟发电商，用最小二乘法对各时段等值报价曲线参数估计。
With all generation plant virtually regarded as an equivalent one, the method of least squares is used for parameter estimation.
本文用最小二乘法拟合的直线确定三相异步电动机风摩耗测量的标准不确定度。
This paper determines standard uncertainty for measurement of windage and friction loss of three-phase induction motor through fitting line of least square method.
用最小二乘法拟合技术严格地计算了精细结构参数。
The fine structure parameters were calculated using a least-squares fitting procedure.
对系统采集的实验数据用曲线拟合的最小二乘法进行处理，完成实验数据的非线性矫正。
The experiment data collected by system is be disposed by Least square method that the contours fit, which adjust the non-linearity of experiment data.
本文用最小二乘法一致逼近及容差平滑分段圆弧拟合平面点列。
This article introduces least square method of unanimous approximation and smooth tolerance of segmented circular arc fit for planar range of Points.
但在实际的测量中，测量数据不可避免地会带来误差，该文在分析和总结了自变量有误差的情况下，用最小二乘法处理实验数据时的几种方法。
But there is always error in measuring. When the independent variable has error-several methods to process data by least square method are discussed in this paper.
弹性弯曲薄板在各种边界条件下，用最小二乘法极值原理可以解算待定常数。
As to elastic flexual plates under various boundary conditions, the undetermined parameters can be solved by the theory of minimization of least square method.
为了便于计算机处理，将有向图用矩阵表示，通过有向图矩阵的乘法运算搜索最长的有向路径。
For computer processing of the directed digraph, it is expressed by a matrix, and then the longest directed paths can be obtained through matrices multiplication.
用变量的线性替换解释矩阵乘法，由此可以简洁而且直观地导出初等矩阵和分块矩阵的乘法原理。
From this point of view, we can concisely and intuitively introduce the multiplication principles of elementary matrix and block matrix.
自动驾驶仪的增益设计成滚动速率和动压的函数，用最小二乘法曲线拟合，为每个增益选择数学模型。
The autopilot gains are scheduled as functions of the dynamic pressure and the roll rate, the model is selected for each gain by a least squares curve fitting.
自动驾驶仪的增益设计成滚动速率和动压的函数，用最小二乘法曲线拟合，为每个增益选择数学模型。
The autopilot gains are scheduled as functions of the dynamic pressure and the roll rate, the model is selected for each gain by a least squares curve fitting.
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