总是可以找到球面的一部分以它为界。
I can always find a portion of the sphere that's bounded by it.
分析了膨胀着的球面的相对论变换。
An analysis of the relativistic transformation of an expanding spherical surface is made.
介绍制作非球面的几种复制法及复制工艺。
Several reproduction method and reproduction process of aspherical surface are presented.
非球面的加工需要复杂的操作步骤和操作技能。
To make an aspherical surface needs complicated operating steps and skills.
介绍了用数控车床加工球面的工装、方法和程序。
Introduces the fixture, methods and programme for spherical surface machined by numerical control lathe.
小曲率大口径球面的检验需要使用几种检验方法。
It is necessary to combine several methods to test the spherical surface with small curvature and large aperture.
突破这一技术是研制大相对孔径非球面的关键环节。
It is a key step of manufacturing the large relative aperture aspherical surface to make a breakthrough at the technology.
我们断言通过此面的总通量与通过球面的总通量相同。
We claim that the total flux through this surface is the same as that through the sphere.
非球面的检测技术一直是制约其得到广泛应用的难题。
Aspheric surface testing technology is a difficult problem, which restricts it to obtain the widespread development.
实验之前对计算全息检测非球面的整个过程进行了模拟。
The whole process of CGH for aspheric surface testing is simulated before the experiment.
因此该方法是一种非常简便、实用的测量非球面的新方法。
This is a very simple and practical new method for the measuring of aspherical surfaces.
特别地，我们给出了闵可夫斯基空间中超球面的一个特征。
In particular, we give a characteristic of hyperspheres in a Minkowski space.
这个椭球面的中心和方位就构成了我们所说的大地基准面。
The center and orientation of the ellipsoid is what we call the datum.
圆锥滚子在和内圈大挡边接触的地方有一个稍带球面的形状。
The roller is tapered, has a somewhat spherical shape and when assembled fits against the large rib of the cone.
曲面的第三基本形式是球面的第一基本形式在曲面上的表示。
The third fundamental form of a surface is the representation on the surface for the first fundamental form of a sphere.
在球面检测中，对大口径球面的测量和评价缺乏有效的手段。
There is not an effective method for measurement and assessment of large caliber spherical surface in the realm of spherical surface inspection.
总结了利用该方法加工转炉轴承座内球面的步骤及其误差控制。
The step and error control in machining the converter bearing seat with this method are summed up.
阐述了成形范成法加工球面的原理、应具备的条件及其运动规律。
This paper described principles, requirements and motion law of generating method which was used to generate spherical surface.
非球面的检测方法虽然已经很多，但都存在着各自不同的局限性。
There are many methods in the testing of aspheric surface, but they have the different limitation respectively.
二条滚道的内圈和滚道为球面的外圈之间，装配有鼓形滚子的轴承。
Two groove of the inner ring and outer ring groove for the ball between the form of a drum, equipped with roller bearings.
给出了多重迭代布朗运动关于球面的首中时的分布与末离时的分布。
The distributions of first hitting time and last exit time of a sphere for multiply iterated Brownian motion are presented.
讨论一类映入球面的满足拟单调不等式的弱调和映射的边界正则性。
The boundary regularity for a class of weakly harmonic maps which maps into sphere and satisfies a quasi monotonicity inequality is discussed.
然而长期以来，非球面的应用一直受到光学加工和检测技术的限制。
However, its application has been limited by optical manufacture and testing technology for a long time.
根据初级像差理论，分析了非球面的位置、初始结构参数的求解规律。
According to the primary aberration theory, the position of aspheric surface and the solution law of initial structure parameters were analyzed.
针对球面的数控铣削问题，对比地分析了自动编程与手工编程的优劣。
In view of the spherical surface numerical control milling question, the paper has analyzed the advantage and disadvantage of automatic programming and the manual programming by contrast.
然后，系统地阐明了点、各种球面曲线以及球面的园弧投影方法和性质。
It also expounds such ar projective methods and properties for points various spherical curves and sphere systematically.
但这些方法所得到的展开面积都不是球面的真实面积，而作图也不简便。
By these methods, each area is not the exact true area and it is also difficult to draw.
也就是说有的雕工特别容易出荧光，比如球面的地方，或者凹陷的地方。
In other words, some are particularly vulnerable to carving out the fluorescence, such as the local sphere, or depressions.
因此，在使用鸭嘴阀时应保持两个半球面的光洁，以确保良好的气密效果。
Therefore, the use of Safety Relief Valves the two hemispheres should be kept clean surface to ensure good sealing effect.
因此，在使用鸭嘴阀时应保持两个半球面的光洁，以确保良好的气密效果。
Therefore, the use of Safety Relief Valves the two hemispheres should be kept clean surface to ensure good sealing effect.
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