该模型的拓扑结构可以是任意型式，允许包含四边形单元、三角形单元和梁（杆）单元。
The model may be various non-simple topological structures and contain any combinations of beams, triangular elements and quadrilateral elements.
从球面三角理论出发，对球面四杆机构构件扭角和机构回路的关系进行分析；
Starting off from the theory of spherical triangle, an analysis was carried out on the relation between component twist angle of spherical four-bar linkage and circuit of mechanism.
结构元素包括杆元、平面梁元、空间梁元、平面三角板元、平面矩形板元和弯曲矩形板元等。
Structural elements contain bar, plane beam, space beam, triangular and rectangular plates with membrane stresses, rectangular plate element with bending deformations.
重型自卸汽车设计中经常选用三角臂组合式倾卸机构，应用的是铰链四连杆机械运动工作原理。
The moving theory of four bar linkage is often used to analyze the triangular arm unloading mechanism of dump truck.
尤其是三角块杠杆最佳高度概念的提出，可以较方便地设计各杆件的几何尺寸，使结构设计更加合理。
According this concept, it's possible to easily design the geometric sizes of levers and to make its construction more reasonable.
本文从曲柄滑块机构中各杆件组成的三角形面积观点出发，分析了曲柄滑块机构中各参数与其面积的内在联系，从而得出相关参数的设计准则。
Based on the area of a triangle, the paper analyses the interior connection between crank structure and areas of triangle, then provides the design rules for its data.
运用该软件研究各个杆件尺寸以及偏差对机构运动的影响，从而确定下三角滑块结构双连杆双曲轴运动机构方案。
Based on the analyse the structure characteristic, the software is developed with C-H-Builder, which can be applied to study the influence on the motion from dimension and tolerance.
用华丽的三角支架装饰吊衣杆的尾端。
三角形不透明抽杆夹，配上透明片，轻便、灵活，适用于各种文稿递交。
Triangle opaque clamp, match the transparent sheets, light and flexible, suitable for the presentation of all kinds of documents.
固定针尚可固定在连接杆前后两面，形成稳定的三角构形。
The pins can be fixed on the anterior and posterior sides of the frame, with a stable angle structure.
在帆面的上方是一根短的圆杆，称为斜桁(gaff)，使得帆面可以在第四条边上延长，因而比同等高度的三角帆面积更大。
At the top of the sail is a short SPAR called the gaff, which allows the sail to extend back along a fourth side, gaining size over a triangular sail of the same height.
正确的上挥杆姿势是右手上臂内侧应该紧贴右臂腋窝，右臂手肘与伸直的左臂呈一个倒三角形。然而一些球手在上杆的时候右臂向上抬起而并非紧贴身体。
Correct gesture for back swing is that the right upper arm's inside should be close to right armpit, while right elbow shapes an inverse triangle with unbend left arm.
正确的上挥杆姿势是右手上臂内侧应该紧贴右臂腋窝，右臂手肘与伸直的左臂呈一个倒三角形。然而一些球手在上杆的时候右臂向上抬起而并非紧贴身体。
Correct gesture for back swing is that the right upper arm's inside should be close to right armpit, while right elbow shapes an inverse triangle with unbend left arm.
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