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。
It was a bit of a surprise, given that most solar observations show a pattern of about 28 days - the rotation rate of the surface of the sun.
这令人感到小小的惊讶，因为大多数太阳观测显示出一个以28天为周期的模式——这正是太阳表面的旋转周期。
The theorem shows some examples of this kind of W-minimal rotation surface we mentioned above.
该定理找到了我们所考虑的此类W-极小的旋转曲面的几个例子。
When the sun's rotation sweeps this warped surface across the earth, we detect sudden changes in the polarity of the magnetic field.
当太阳的自转使这个波浪形间隔面扫过地球时，我们就会探测到磁场极性的突然反转。
This accuracy isn't limited by the sensitivity of the pickup system, but by the quality of the shaft surface and the noise generated by the rotation.
这不仅限于准确性的灵敏度拾音器系统，但在质量，轴表面和噪声所产生的轮换。
As an application, we find one kind of W-minimal rotation surface, and get one of the important theorem in this paper.
作为应用我们找到了一类W -极小的旋转曲面，得到了本文的一个重要定理。
Hysteresis loop of ferromagnetic materials are measured by using surface magneto-optic Kerr effect, and the Kerr rotation Angle is obtained.
用表面磁光克尔效应测量铁磁材料的磁滞回线，并求得在饱和状态下的克尔旋转角。
Earth tugging on the Moon's surface has slowed down the rotation of the Moon over time.
随着时间的推移，地球对月球表面的牵引逐渐减缓了月球的自转。
Since the existence of embedded rotation surface with given principal curvature function is well proofed, the design and modeling of the surface becomes possible.
由于给定主曲率函数的嵌入旋转曲面存在性已得到较好证明，故使得曲面的设计成为可能。
The mathematical model of the surface shape measurement of aspherical optical components is built up according to the laser scanning measurement principle by the translation & rotation method.
根据激光扫描平移加旋转法的测量原理，推导出了非球面光学零件面形测量的数学模型；
Explains the application of workpiece coordinate system rotation in machine hole on the cone surface by machining a practicable manufactured product.
通过实例说明在数控加工中，通过工件坐标系旋转加工圆锥面上孔的方法。
By making use of transformation of coordinate translation, coordinate rotation, we deduced general formula about area of rotational surface.
利用坐标平移、旋转变换，导出旋转曲面面积求法的一般公式。
The effect of transverse shear deformation is considered and Angle of rotation of surface normal for each layer is different.
这类板的横向剪切变形效应必须予以考虑，因而层板不同层的表面法线的转角是不同的。
The results showed that the weld detects on the surface of the axle was the reason to cause low stress fatigue under rotation bending stress which finally lead to the fatigue cracks on the axle.
结果表明，该轴断裂是由于轴表面存在焊接缺陷，在旋转弯曲应力作用下产生低应力疲劳开裂。
As a result of the earth's rotation on its axis, the radiant energy received by any area of the earth surface from the sun varies periodically.
由于地球上任一地区接收到太阳辐射能量的周期变化，导致地球表面温度的周期性变化。
This paper is to display existence and its conditions to a surface acoustic wave propogating along surface of a half-body of piezoelectric ceramics with a rotation of constant angular velocity.
对转动半无限压电陶瓷体的表面声波给出了存在性证明及其条件。
Door design from several parallel lines, in the distorted rotation after the formation of the surface tension.
景区大门的设计来自于几条相互平行的线条，在进行扭曲旋转后形成的张力曲面。
Because the irrotational component of the active intensity depends on the surface sound intensity, measuring the surface sound intensity can avoid the effect of the rotation.
有功声强的无旋分量与表面声强有关，因此测量表面声强可避免有旋性的影响。
Composite processing center mainly refers to five surface composite processing, automatic rotation of the spindle head for vertical processing.
复合加工中心主要指五面复合加工，可自动回转主轴头进行立卧加工。
When I stroked first with the other arm, I added the power of core-body rotation to that first stroke – increasing the distance and speed of my breakout to the surface.
但当我用另外一侧胳膊的划臂作为起始的话，在第一次划臂时我会把力量用在身体轴心的旋转上---这样增加了划臂的距离和速度。
The deformations of the element in the middle surface of the shell and its rotation about all axes are considered in the derivation of these equations.
在推导过程中，考虑了壳体微元在中面内的变形和绕各个轴的转动。
Inadequate submergence can result in pre-rotation of the water in the wet-well, resulting in the formation of strong free-surface air core vortices and the entrance of air into the pump suction inlet.
潜水不恰当可能导致湿井内的水预旋转，导致形成强烈的自由表面空气中心漩涡，并使得空气进入泵的吸入进口管道。
In turning the work a cutter moves in the direction parallel to the axis of rotation of the work or at an Angle to this axis, cutting off the metal from the surface of the work.
在转弯时的事变方向运动的刀平行轴的旋转的事变或在一个角度来这个轴，堵截金属的外貌的事变。
At the same time, we measured the position of body surface projection of the vessels original point, and studied the rotation range.
同时，测量各血管起点处的体表投影，研究其旋转弧范围。
The utility model has the advantage that the long service lives of the pump and the oil film of a rotor shaft and an end surface can be maintained under the condition of high-speed rotation.
即使在高速转动状态，也能保持转子轴向端面的油膜，泵的使用寿命长。
Study of truncated intersector curve of single leaf and double leaf bilateral curved rotation surface;
该文给出并证明球面与单叶旋转双曲面的轨迹互变特征。
Study of truncated intersector curve of single leaf and double leaf bilateral curved rotation surface;
该文给出并证明球面与单叶旋转双曲面的轨迹互变特征。
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