1.
parallelogram illusion
平行四边形错觉 平行四边形错觉
2.
double link jib in parallelogram
平行四边形组合臂架
3.
fundamental period parallelogram
原始周期平行四边形
4.
parallel motion linkage
平行四边形悬挂装置
5.
primitive period parallelogram
基本周期平行四边形
6.
primitive parallelogram of period
周期的原始平行四边形
7.
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。
8.
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
9.
a parallelogram with four right angles.
有四个直角的平行四边形。
10.
parallelogram rule for addition of vectors
向量加法之平行四边形法则
11.
a parallelogram with adjacent sides of unequal lengths; an oblique-angled parallelogram with only the opposite sides equal.
相邻的边长度不相等的平行四边形；只有相对的边长度相等的非直角平行四边形。
12.
a parallelepiped bounded by six similar faces (either rhombuses or parallelograms).
有六个面的平行四面体（或是棱形的或是平行四边形的）。
13.
a prismatoid whose bases are polygons having the same number of sides and whose other faces are trapezoids or parallelograms.
每个底部是边数相同的多面形且其它面是不等边四边形或平行四边形的旁面三角台。
14.
crossed parallelogram
平行四边形电流换向器方向转动的曲柄
15.
Analysis of Synchronous Welding Positioner Based on Ogram Mechanism;
基于平行四边形机构的同步式变位焊接机分析
16.
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)
17.
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
18.
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