查询词典 triangle of force

In addition, the blank holding force that is required to avoid wrinkle and rupture during conical part deep drawing is researched. The necessity of reasonable blank holding force in pressing is expounded. From the view of mechanical analysis, the wrinkle critical condition of side-wall is derived for the first time by the stress state of side-wall, the main deformation region on blank. According to the critical condition of plastic instability for flange, side--wall, corner of punch on blank, The blank holding force in conical part deep drawing is divided into four different regions within its forming figure. The basic principle of reasonable blank holding force during stamping is summarized and provided. The mathematical model of reasonable blank holding force that avoids the wrinkle and rupture is established and verified by the finite element numerical simulation and the grid experiment method. The result shows that it is accurate and reliable.

此外，本文还研究了圆锥形件拉深成形过程中，随着拉深变形过程的进行，毛坯为避免产生起皱、破坏缺陷而对压边力的需求情况，阐明了圆锥形件拉深成形过程中压边力合理变化的必要性；由毛坯主要变形区悬空锥壁部分的受力变形情况，从力学分析的角度，首次推导得出了圆锥形零件悬空锥壁起皱失稳的临界条件；并根据主要变形区法兰、悬空锥壁及凸模圆角部分的塑性失稳临界条件，在其成形范围图中，将圆锥形件成形过程中的压边力划分为四个区域；总结并提出了圆锥形件成形过程中压边力合理变化的基本原则；建立了防止起皱、破坏缺陷产生的压边力合理变化的数学模式，并得到了有限元数值模拟及网格实验法的验证，证实了理论分析结果的正确性和可靠性。

Triangle with three acute angles is called acute angle triangle.

重点句子： 1。*三个角都是锐角的三角形叫做锐角三角形。

Even the triangle formed by the nose and the mouth was a perfect acute golden triangle.

即使是鼻子和嘴形成的三角也是一个完美而精确的金三角。

The application problems mainly focus on how to solve triangle, acute triangle function, equation, inequation, function and its image, the three-dimensional image of a solid; while such knowledge as, plane geometry, solid geometry, operation of number and equation, trigonometric function equation, permutation and combination, ordered series of numbers sum, probability has no application problems.

4高中物理学习中存在运用困难的数学知识主要有函数及其图像、解三角形、锐角三角函数、方程、不等式、求函数极值、几何体的三视图等，然而，平面几何、立体几何知识、数与式的运算、三角函数公式、排列组合、数列求和、概率等知识基本没有运用困难。

The CDXUTMesh10::ConvertToAdjacencyIndices handles this by creating an index buffer in which every other value is the index of the adjacent vertex of the triangle that shares an edge with the current triangle.

CDXUTMesh10：：ConvertToAdjacencyIndices做了这个操作，在这个Index Buffer中，每个其他的值代表和这个三角形共享边的其他三角形的Index。

This article analyzes the problem about making segments crossing any point of a triangle to bisect the area of the triangle.

本文分析了过三角形中任意一点作线段平分三角形面积问题。

Is the set of the barycenter of if is a regular triangle, and is the perpendicular bisector of the base if is a nonregular isosceles triangle.

当 为正三角形时，是的重心所成的集合，当为非正三角形的等腰三角形时，是底边的中垂线。

National Flag: The national flag (proportions 5 by 3 when flown on land, but 2 by 1 at sea) is green, with a white-bordered yellow triangle on which is superimposed a black-bordered red triangle.

国 旗：三角形箭头象征国家的前进步伐；绿色象征农业和林业等自然资源；白色象征河流和水源；黄色象征矿藏、财富；黑色象征人民勇往直前、坚韧不拔的精神；红色象征人民建设祖国的热情和力量。

If Kobe's jab stepping at the top of the key and there are no cutters…there should be a "pressure release" aka "The Blind Pig"…Creating a triangle in a way that is inconspicuous to the defense… and another triangle axiom, The player with the ball hits the first open man.

如果科比在顶端持球，没有人空切的话…那么就要有球员打"pressure release"或是"The Blind Pig"…形成一种不引起防守方注意的三角…另一个三角哲理是，持球者和首先发现空位的球员之间的摩擦。

Constructing triangle surface which interpolates the boundary curve and cross-boundary slopes on a triangle is the basic problem in computer aided geometric design, computer graphics and so on.

在三角形域上构造对边界曲线和跨界导数插值的三角曲面是计算机辅助几何设计和计算机图形学等领域中的基本问题。

Anna: No, I've got a hangover.

不是，我昨晚宿醉了。

We head into the mountains in Su's new Land Cruiser, stop for lunch at a scenic restaurant and then hang around drinking beer and eating fruit as two of his employees attempt to lure the birds with a tape recording of the fowl's mating call.

我们坐上苏的巡逻车向山顶出发，在一家风景优美的餐馆吃了中饭。然后我们喝着啤酒吃着水果四处逛。