查询词典 geometric

You'll find patterns with abstract, geometric, realist or surrealist motifs.

你会发现图案抽象的，几何，写实或超现实主义图案。

The flywheel has a shape formed by rotation, around the rotation axis, of a geometric figure symmetric about the rotation axis and the axis perpendicular to the rotation axis, and split into two parts (2, 3), e.g. of equal volume, by a plane passing at an angle greater that forty five degrees and smaller than ninety degrees to the rotation axis, the two parts being rotated relative to each other around the rotation axis at an angle no greater than ninety degrees.

所述飞轮具有由相对于旋转轴线和垂直于该旋转轴线的轴线对称的几何图形围绕旋转轴线旋转所形成的形状，并被与旋转轴线成大于45度小于90度角的平面分成两部分(2、3)，例如等体积的两部分，所述的两部分围绕旋转轴线以不大于90度的角度彼此相对于旋转。

3 Axially Symmetric Problems for Space Among spatial problems, if the elasticity body's geometric shape,restraint condition and any external factors are symmetrical in a certain axis(any plane which passes this axis is all symmetrical one),then all stresses,deformations and displacements are symmetrical in this axis.

§8-3 空间轴对称问题在空间问题中，若弹性体的几何形状，约束情况以及所受的外来因素，都对称于某一轴(通过这个轴的任一平面都是对称面)，则所有的应力，形变和位移也对称于这一轴。

得 (1 2r ) A 1 + A2 = 0 由条件得 4π(1 )A1 + 2A2 = P P (1 2) A1 =, A2 = P 2π 2π由及二式的联立求解,得 42 Substitute the obtained A1 and A2 into the forgoing representations, we get (1 +)P rz (1 2)r ur = R2 R + z 2πER (1 +)P z2 ω= 2(1 )+ 2 2πER R P (1 2)R 3r 2 z σr = 3 2 2πR R + z R (1 2)P z R σθ= 2 R R + z 2πR 3Pz3 3Pr z 2 σ z = 5 ,τ zr =τ rz = 2πR 2πR5 43 将得出的A1及A2回代,得(1 +)P rz (1 2)r ur = R2 R + z 2πER (1 +)P z2 ω= 2(1 )+ 2 2πER R P (1 2)R 3r 2 z σr = 3 2 2πR R + z R (1 2)P z R σθ= 2 R R + z 2πR 3Pz3 3Pr z 2 σ z = 5 ,τ zr =τ rz = 2πR 2πR5 44 §8-4 Spherically Symmetric Problem For Space Among spatial problems, if the elasticity body's geometric shape,restraint condition and any external factors are symmetrical in a certain point (any plane which passes this point is all symmetrical one),then all stresses,strains and displacements are symmetrical in this point.

§8-4 空间球对称问题在空间问题中，如果弹性体的几何形状，约束情况以及所受的外来因素，都对称于某一点(通过这一点的任意平面都是对称面)，则所有的应力，形变和位移也对称于这一点。这种问题称为空间球对称问题。

Second the characteristicsSingle-stage single suction in-line centrifugal pump of Roots vacuum pumps: comparison with other oil seal vacuum pumps have the following characteristics: 1 in a wide pressure range with a large pumping speed; 2 the rotor has a good geometric symmetry it is vibration smooth operation.

二、罗茨真空泵的特点：与其它油封式真空泵相比有以下特点： 1、在较宽的压力范围内有较大的抽速； 2、转子具有良好的几何对称性，故振动小，运转平稳。

We derive the geometric constraints induced in the image by the symmetry properties of SOR structure.

我们获得在图象导致的几何限制被SOR结构对称物产。

The curve, to be calledλ-Bezier curve not only inherits themost properties of n-degree Bezier curve, such as endpoints properties, symmetry,convex hull property, geometric invariability, affine invariance, convex-preservingproperty, variation diminishing property and so on, but also can be adjusted inshape by changing the value ofλwithout changement of control points.

曲线不仅具有n次Bézier曲线的特性：如端点插值、端边相切、凸包性、变差缩减性、保凸性等，而且具有形状的可调性：在控制顶点不变的情况下，随着参数不同，可产生不同逼近控制多边形的曲线。

Avoid using input elements that are tangent to each other since this may result in geometric instabilities in the tangency zone.

避免使用相互相切的元素，因为这样可能在相切区域引起几何不稳定性的后果。

Also the cases for modifying geometric features such as position, tangency or normal vector of one selected point and a series of selected points are discussed respectively.

根据给定的几何约束，首先在各参数点处分别构造出一系列满足该点处几何约束的局部曲面，并由此构造总曲面。

Based on the geometric expression of the NURBS curve, a simple and effective method of curve and surface extension is put forward, and the blade surface is then successfully extended with the tangent vector by repeatedly applying the above method.

根据叶片的形状特征，以曲线的几何形式为基础，提出了一种简单实用的曲线曲面延伸方法，实现了切矢量连续的叶片型面的延伸。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？