飞机的对称轴线。
The Earth's axis of rotation is tilted in relation to the ecliptic plane, an imaginary surface through Earth's orbit around the sun.
地球的自转轴与黄道面呈一定角度。黄道面是地球公转轨道所在的一个假想平面。
Pi orbitals are a molecular orbital that have a nodal plane through the bond axis.
轨道是沿着键轴,有节面的分子轨道。
I can draw now any xy axis where I please, anywhere in the plane of the blackboard.
可以在任意地方画轴，不管是黑板面任意点。
So PI bonds have electron density both above and below the bond axis, but they actually have a nodal plane at this z, this bond axis here.
键在键轴之上，和之下都有电子密度，但它们在z方向有节面，这是键轴的地方。
The reason that it's sigma is if you look at the bonding axis here, is that there is no nodal plane along the bonding axis.
它是sigma键的原因是，因为如果你看键轴，上面是没有节面的。
Yes? Yeah, so I'm saying when you fix theta you get only a half plane, not a full plane I mean, it goes all the way up and down, but it doesn't go back to the other side of the z axis. Why?
请说，所以我说当固定θ时,得到的是半平面，而非全平面,它布满z-轴的一侧,但从不延伸到z-轴的另一侧，为什么？
But in sigma orbitals, you have no nodal planes along the bond axis, so if we had a nodal plane here, we'd see an area where the wave function was equal to zero.
但在sigma轨道里，沿着轴向是没有节点平面的，如果我们有个节点，我们就会看到某个地方波函数等于0。
The device of claim 19, wherein said first, second and third axis are in a common plane.
该设备的索赔19 ，其中说，第一，第二和第三轴是在一个共同的飞机。
In this case, his arm has not passed through the horizontal plane axis of his shoulders at footstrike.
张伯伦的例子是，他的手臂在左脚跨出去踩到地面之时，尚未通过他肩膀的水平面轴线。
A conic section whose plane is not parallel to the axis base or generatrix of the intersected cone.
圆锥的一部分，其切面既不平行于轴和基面，也不平行于圆锥母线。
This turnable can be rotated in its own plane about its axis A. and is mounted on gimbals within a ring.
此内转台可在其自身平面内绕其轴线a转动，并装在一个位于圆环里面的常平架上。
In computer graphics, turning all or part of a display image180 degrees about an axis in the plane of the display surface.
在计算机制图技术中，显示图象的全部或一部分对显示面所在平面中某个轴线翻转180度的处理方法。
The greatest lateral force effect in the plane perpendicular to the measuring axis is to be stated.
作用在与测量轴垂直的平面上的最大侧力作用是一定的。
A fault movement can be resolved into an axial component (parallel to the pipe axis), a lateral component (perpendicular to the pipe axis) in the horizontal plane and a vertical component.
断层运动可分解为轴向分量(与管轴平行)、水平面的侧向分量(与管轴垂直)和竖直分量。
The optical axis of uniaxial substrate is either perpendicular or parallel to the substrate plane.
单轴介质的光轴方向既可平行又可垂直于介质分界面。
Also, a solution is offered to solve the problem of generating tool axis vector when the surface normal ts perpendicular to rotary plane.
同时解决了曲面法矢垂直于回转平面时刀轴矢量难以确定的关键问题。
We study the beam paths in uniaxial crystal with arbitarily oriented optical axis in general conditions, by it′s plane and ellipsoid of refraction index and Fresnel law.
从菲涅耳定律出发，利用单轴晶的折射率面和光率体，讨论了在一般情况下单轴晶内部的光路问题。
Electrical axis. Excircle plane processing.
电器转轴。外圆平面等加工。
In this paper a computer method for searching the root loci by moving real axis parallelly in the complex plane is presented.
本文介绍一种用平移实轴平面搜索法求根轨迹的计算机方法。
The plane rotation axis system adopted for the bridge is composed of plane rotation axis, inner and outer safety legs and plane ring slideway.
大桥采用的平面转动轴心体系由平面转动轴心、内外保险腿和平面环形滑道组成。
The dynamic mechanism of a new type of machine tools for machining plane is discussed, which is the roulettes of the fixed axis gear train.
探讨了一种新型车削平面运动机床的运动机理，即定轴轮系的旋轮线原理。
The expression of complex amplitude is given in reference plane vertical to the optical axis by far-field approximation when the line source and the principal axis are at any Angle.
在柱坐标下从微分波动方程出发，推导柱面光波的场分布，并利用远场近似条件导出当线光源与光轴成任意角度时，在垂直光轴方向的参考面上的复振幅表示。
With the help of the conformal transformation, we transform a simply connected region and its boundary into the upper half plane and real axis.
借助保形变换将单连通区域及其边界化为上半平面与实轴。
Another key purpose that our moon serves is that its gravitational force stabilizes earths axis with respect to earths plane of orbit around the sun.
月球也有另一个主要功用：它的引力使地球的轴心跟地球绕太阳运行的轨道平面保持一定的倾斜度。
If the axis of the cone (cylinder or plane) lies in the plane of the equator the aspect is transverse.
如圆锥(圆柱或平面)轴位于赤道平面内，则成为横轴。
But the alignment and calibration of the optical axis and the electric axis of phased array radar demands high perpendicular accuracy of the optical axis to the array plane.
而相控阵雷达光电轴的标定与校准则要求光轴与阵面较高的垂直精度。
But the alignment and calibration of the optical axis and the electric axis of phased array radar demands high perpendicular accuracy of the optical axis to the array plane.
而相控阵雷达光电轴的标定与校准则要求光轴与阵面较高的垂直精度。
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