parallelogram law of addition

A rigorous mathematical model for the well-known practical parallelogram method for insurance premium rate adjustment is set up.

为在保险费率调整实践中著名的平行四边形方法建立了严格的数学模型,提出了修正平行四边形方法和更一般的三角形方法,其皆可被看成是费率厘定的新工具。

Moreover, the parallelogram law is also generalized and some important operator inequalities are established.

与此同时推广了平行四边形法则,给出了一些重要的算子不等式。

In some papers, the observations were processed according to the parallelogram law but the results are.

为获得日本油壶和弥彦两个地壳运动观测所的北南、东西方位的地倾斜值，有学者曾简单地运用向量合成、分解中的＂平行四边形法则＂对两地的水管倾斜仪观测资料进行处理。

Extending of parallelogram mechanism and its application;

平行四边形机构的拓展及其应用

Formulation of C_1 Conforming Parallelogram Thin Plate Element;

C_1阶协调平行四边形薄板单元的构造

This paper has put forward three sections of parallelogram、erect traperzium and hollow rectangle,in order to resolve this problem.

冲天炉炉胆径向胀裂问题,也是一道颇有难度的课题,本文提出:用平行四边形、竖立的梯形和微凹矩形三种炉壁断面作为防止措施。

A Mathematical Model for the Parallelogram Method in Ratemaking;

费率厘定平行四边形方法的数学模型(英文)

Research on Dynamic Design for High Performance Parallelogram Manipulator

高性能平行四边形机械手动态设计方法研究

parallelogram illusion

平行四边形错觉 平行四边形错觉

A quadrilateral having no parallel sides.

没有平行边的四边形

parallelogram rule for addition of vectors

向量加法之平行四边形法则

double link jib in parallelogram

平行四边形组合臂架

fundamental period parallelogram

原始周期平行四边形

parallel motion linkage

平行四边形悬挂装置

primitive period parallelogram

基本周期平行四边形

primitive parallelogram of period

周期的原始平行四边形

a parallelogram with four equal sides; an oblique-angled equilateral parallelogram.

四个边相等的平行四边形；不是直角的等边平行四边形。

A quadrilateral having two parallel sides.

梯形一个有两条平行边的四边形

A trapezoid is a quadrilateral with two parallel sides.

梯形是具有两平行边的四边形。

crossed parallelogram

平行四边形电流换向器方向转动的曲柄

A four-sided plane figure with opposite sides parallel.

平行四边形一种有四条边且每两条边对应平行的平面图形

(in US) a quadrilateral with no parallel sides.

（在美国）没有平行边的四边形。

(in US) a quadrilateral with two parallel sides.

（在美国）有两个平行边的四边形。

a quadrilateral whose opposite sides are both parallel and equal in length.

相对的边平行且长度相等的四边形。