曲率

The region where it produces two-stream instability is encircles by three boundaries: the outer open field lines, the nearest distance where the instability could take place (corresponding the charactistical frequence is equal to the plasma frequence), and the largest distance where the instability could take place along field lines.

可以发生双流不稳的区域是由三个边界面围成的：一是最外的开场线。一是不稳定性可以发生的最近距离(对应于曲率光子特征频率等于等离子体频率的地方)，最后是沿磁力线能够激发起双流不稳性的最大距离。

Structure form adopts converse triangle beam double-hole connection welded by general electric trolley wall plate and steel plate, connection shaft, triangle beam bottom is connected with girder by nut and thrust bearing, triangle beam could rotate 360 degrees horizontally, thus realize whole set electric trolley horizontal rotation, largely reduce curve track curvature radius of electric hoist traveling mechanism.

结构形式采取通用电动小车墙板与一个钢板和连接轴组焊的倒三角形吊梁双孔连接，三角吊梁下面通过螺母及推力轴承与一个横梁连接，三角吊梁相对横梁可在水平方向做360度旋转，从而实现电动小车的整体水平方向转动，大大减小了电动葫芦运行机构弧形轨道曲率半径。

The initial internal force of the drill string in 3D wells can thus be obtained from the curvature and the torsion of the well axis.

从而实现了由井眼轴线的曲率和挠率，计算得到复杂三维井眼中钻柱的初始内力。

The influences of curvature, torsion and inclined angle of cross section of the pipe on the flow characteristics are analysed and studied in the fully developed steady laminar flow of helical square pipe.

借以分析研究了螺旋状矩形管在定常、充分发展的层流流动中，管的曲率、挠率和横截面倾斜角对流动特性的种种影响。

If backward.curved al e—used.curvature results in a lower tip speed for the same head,which diminishes the erosive effect Of ash particles.

如果使用向后弯曲的叶片，曲率形成了一个低速点可以减小粉尘颗粒的腐蚀作用。

The camber near the switch point changes rather slowly, while it changesrapidly at certain distance range from switch rail.

建议尖轨轨头非工作边的刨切曲线采用缓和曲线和圆曲线的组合线型，在尖轨理论尖端至圆曲线之间，为一曲率渐变的缓和曲线，在尖轨尖端附近矢度变化较慢，而在距尖轨一定范围时，矢度变化较快。

With the use of RNG turbulent model in the CFD software Fluent, the inner flow of double suction centrifugal pump with semi-spiral suction chamber was calculated.

在CFD软件Fluent中采用考虑了旋转与曲率影响的RNG湍流模型，对具有半螺旋形吸水室的单级双吸离心泵进行了全流道数值模拟计算。

Through the numerical simulation analysis, the stress concentrationstatus before the crack splits has been researched, and the have been found. Therelationships between fracture splitting force 、 factor and opening angle,curvature radius、the depth of crackle groove have been carried out.

通过数值模拟，分析了应力集中程度，得出了预制裂解槽张角、曲率半径、槽深对裂解力及几何形状因子的影响曲线。

According to general relativity, objects determines the quality and distribution of space - time curvature.

根据广义相对论，物体的质量和分布决定着空—时的曲率。

Such a universe is said to be "closed", and the curvature of its space produces triangles containing more than 180

这样的宇宙被称为&封闭宇宙&，它的空间曲率会使三角形的内角之和大于180°。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。