1.
parallelogram rule for addition of vectors
向量加法之平行四边形法则
2.
This construction is often called the parallelogram law of addition of vectors.
这种作图法常被称为矢量相加的平行四边形法则。
3.
parallelogram illusion
平行四边形错觉 平行四边形错觉
4.
A quadrilateral having no parallel sides.
没有平行边的四边形
5.
Amelioration about the Demonstrator of Force Parallelogram Formula;
关于力的平行四边形定则演示仪的改进
6.
double link jib in parallelogram
平行四边形组合臂架
7.
fundamental period parallelogram
原始周期平行四边形
8.
parallel motion linkage
平行四边形悬挂装置
9.
primitive period parallelogram
基本周期平行四边形
10.
primitive parallelogram of period
周期的原始平行四边形
11.
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。
12.
A quadrilateral having two parallel sides.
梯形一个有两条平行边的四边形
13.
A trapezoid is a quadrilateral with two parallel sides.
梯形是具有两平行边的四边形。
14.
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
15.
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)
16.
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
17.
A prismatoid having polygons with the same number of sides as bases, and faces that are parallelograms or trapezoids.
平截头棱椎体以边数相同的平面多边形为底面的，各侧面为平行四边形或不规则四边形的拟柱体
18.
(in US) a quadrilateral with no parallel sides.
（在美国）没有平行边的四边形。