平面

Using the two-stream fluid model, the linear dispersion relation is derived assuming a two-dimensional spatial geometry. Two cases are considered, one is that the 2D spatial geometry is defined by the plane containing the two counterstreaming electron populations and the perturbation wave vector , and the other is that the geometry is defined by the plane being vertical to the two counterstreaming electron populations .

对高能束流和电子回流构成的双流系统，建立冷等离子体流体模型，采用简正模分析方法，分别考虑扰动波矢在平行于电流传播方向的平面上和在垂直于电流传播方向的平面上这两种情况，推导了不稳定性的色散关系。

A top loaded antenna is provided that is composed of a triangular-shaped resonator and a dielectric substrate.

一种顶端负载之类梯形平面天线，其中，顶端负载之类梯形平面天线形成在一基板表面，并藕接至一射频电路。

Finally, after these nodes are connected according to the certain rule, the quadrilateral grid of tooth profile plane model is generated.

先按照齿廓的形状，在齿廓平面模型的不同部分生成一定疏密间隔的控制线，然后在控制线上生成一定疏密间隔的节点，最后根据一定的规则连接这些节点，即可自动生成齿廓平面模型的四边形网格。

The ultraprecision plane is the base of precision machine tool and precision instrument. Plane precision is measured accurately is very important.

超精密平面是精密机床和精密仪器的精度基础，有效准确地测量平面精度是极为重要的。

The Shangluo dialects are very complicated because of immigration. The local dialects belong to the north dialects, while the guest dialects belong to the south dialects. The local dialects develop faster than the guest dialects, the latter are relatively conventional. In fact their differences of phonetics structure at synchronic planes just reflect each phase of Chinese dialects at historical planes. The third chapter studies the phonological structure and historical changes from intiai consonant simple or compound vowel of a Chinese syllable and tone on the base of the synchronic planes, consulting QieYun and ZhongYuan phonology.

商洛方言由于移民原因具有复综性的特点，本地话属北方方言，客户话属南方语系，相比之下本地话发展较快与北方官话基本一致，而客户话就显得保守一些存古的东西更多，共时平面的差异实际上反映了汉语方言历时层面的不同阶段，第三章基于商洛方言共时平面的特点，参照《切韵》和《中原音韵》，从声母、韵母、声调三个方面研究了商洛方言的音韵结构和历史演变，并对汉语史的某些语音现象做了相应地解释。

The common image plane of three images after rectification is calculated under rectification constraints, and three-ranked matrices are then computed under undistorted image constraints. With this the image is resampled in planar affine coordinate to align images either in row or in column.

根据校正基本约束确定校正后的图像平面，利用图像不变形约束计算校正所需的三阶矩阵，用于在平面仿射坐标系下对图像进行重取样，使图像的行列对齐。

The vise is made of two parts:vise body and swivel base.Horizontal swivel goes through 360°,45°angle tilts vertically.The accurate graduations and drilling on grinders and milling machines.

精密万向平口钳是由精密工具哦空气和转盘底座两部分组成，可借助刻度转盘在水平面360°范围内转动，在垂直平面上倾斜45°，可用于精密磨床、铣床等进行平面、斜面及倾斜一定角度的斜孔加工。

The vertical axis of the switch has a surface of positive first differential, comprised of splines drawn between points if varying distance from a datum plane, and has along the horizontal axis a surface of a positive first differential and negative second differential, comprised of a combination of splines drawn between points of varying distance from the datum plane.

开关的竖直轴线的表面具有正的一阶微分，其由多个在离基准平面不同距离的点之间绘制的样条构成，并且沿水平轴线具有一个表面，该表面具有正的一阶微分和负的二阶微分，其由一组在离基准平面不同距离的点之间绘制的样条构成。

The great circle representing the apparent annual path of the sun; the plane of the Earth's orbit around the sun; makes an angle of about 23 degrees with the equator.

在地球上看到的太阳运行的轨道；地球绕着太阳转的平面；与赤道平面大致成度角。

The shear behavior of stressed skin diaphragm assembly fastened by self-drilling screws was studied by the cantilever beam diaphragm tests,in which the behavior of large scale spesimens was compared the with small ones.

为研究自攻螺钉连接的受力蒙皮组合体在平面抗剪性能，本文采用了卧式悬臂梁试验方案，进行了大小尺寸试件的对比试验，通过试验和总结前人成果的基础上，提出了非对称受力模型的概念，并据此给出了蒙皮组合体在平面强度和刚度简化计算公式。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。