四边形

The Most Nearly Circular Ellipse Circumscribing a ?

一个已知四边形的所有外接椭圆中，哪一个与圆的偏差最小？

In this situation, the geometry shader extrudes two new triangles to create a quad to match up between the front cap of the shadow volume and the back cap.

在这种情况下，GS抽取两个新三角形生成一个四边形来匹配封顶和封底之间的Shadow Volume边界。

Both soil and fluidizing mortar are simulated using Mat-elastic-plastic-hydro model, and Eos-Gruneisen is used as state equation.

采用拉格朗日四边形网格分别对炸药、砂浆和土壤进行了网格划分。

Based on the theory of hanging on laneway roof with roof bolt and taking the bolt as base point, this new preceding support can work in the free space on the laneway roof, allowing other equipments such as the entry-driving machine work at the same time, thus improving the utilizing efficiency of the laneway. On the cirques track of bolts, its three groups of claw, which are driven by hydraulic force, work as fulcrums to one another to push the support move forward.

基于顶板锚杆悬挂理论，以锚杆为基点，采用自制圆形梁为执道，以液压力驱动3组机爪互为支点实现超前支架在巷道顶部空间的迈步前移，采用具有顶板适应性的变运动方向平行四边形机构作为超前支护机构，来实现超前支架的支护作业。

In order to deal with different kinds of building shapes,body-fitted quadrilateral grids are arranged in the inner domain and rectangle girds in the outer domain.

为适应不同建筑体型的需要，本文提出在内层区域布置贴体的任意四边形网格，而在外围区域布置直角坐标矩形网格的分层网格离散模式。

The foundation of arch dam usually is layer rock base, and the depths of the layer are small, it is common that several layer rock base contact with one layer element grid. According to the geometry relation and the property of shape function, a new element kind that includes 24 nodes has been proposed to dissect the dam and foundation effectively, whose shape function are independent. In fact the element can be looked as a hexahedron divided into five small hexahedrons. It can be simulate all kind of the condition of the base and the dam.

拱坝的地基一般是层状岩石地基，有的层厚度很小，这样就有多个岩层和坝体某层单元接触，本文根据岩基与坝体接触的几何关系，利用形函数的性质，提出24节点六面体层单元，这种单元实际上是将一个厚的六面体单元分成5个更薄的六面体单元而形成的，其形函数采用可以拆分的形式表达，因此可以方便地解决坝体单元的一、二、三、四个面与错动带接触的情况，可以模拟一、二、三、四个棱边与错动带接触的情况，还可以退化为12节点的四边形面单元，以及五面体层单元。

Chapter Ⅱ, Moduli of quadrilaterals and substantial points.

第二章，四边形的模与本质边界点。

The design shuns the typical campus architecture of enclosed quads in favor of interconnectivity with the landscape.

回避的设计有利于在相互联系与景观的封闭四边形典型的校园建筑。

The design shuns the typical campus architecture of enclosed quads in favor of interconnectivity with the landscape.

设计回避了校园建筑中典型的封闭四边形的设计，而是创造出了和景观相互联系的新的校园空间。

The list of examples can vary from muscle cars to skateboards to quads and motor bikes.

榜样的名单可以改变肌肉的滑板车的四边形和摩托车。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新