讨论了四元数量子力学中带有谱约束的最小二乘解反问题，得到了此问题有解的充分条件。
The inverse least square problem with spectral constraints is also studied and a sufficient condition is given for its solvability.
第二天早晨庞德烈先生起床后正好赶上载他去码头乘轮船的四轮马车。
Pontellier was up in good time to take the rockaway which was to convey him to the steamer at the wharf.
本文利用偏最小二乘回归分析方法和四分模型找出影响顾客满意度的关键因素。
This paper use partial least squares regression analysis and quarter of the model to identify the key factors affecting customer satisfaction.
只能使用四个二元算术运算符(加、减、乘、除)。
Only the four usual binary arithmetic operations (addition, subtraction, multiplication and division) are allowed.
论文将对偶四元数法应用到三维物体识别的匹配算法中，利用最小二乘的思想提出了一种基于迭代最近点的匹配算法。
Last, we apply the dual quaternion algorithm to matching algorithm of 3d object recognition and make use of least-squares technique to propose a matching method based on iterative closest point.
在最小二乘意义下用GNL法拟合了常见的四参数隐函数曲线。
The common curves of implicit function with 4 parameters are fitted in the meaning of least square by means of GNL method.
介绍一种用三参数正弦波拟合算法实现的、绝对收敛的四参数最小二乘正弦波拟合算法，给出了其收敛区间、绝对收敛判据以及实现过程。
A four-parameter sine wave curve-fit method is intro - duced, which is based on the three-parameter sine wave curve-fit method and its an absolute convergent course.
介绍一种用三参数正弦波拟合算法实现的、绝对收敛的四参数最小二乘正弦波拟合算法，给出了其收敛区间、绝对收敛判据以及实现过程。
A four-parameter sine wave curve-fit method is intro - duced, which is based on the three-parameter sine wave curve-fit method and its an absolute convergent course.
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