spherical length

Finally, the thesis will discuss the selection of step length, string space and radius of spherical cutter in the three coordinate axes and two axes linked machining center based on the practice of NC machining for revolution surface parts.

本文还通过旋转曲面零件的数控加工实践，对二坐标联动加工时直线插补步长、行距及球刀半径的选择进行了探讨。

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Measurement of lens focal length and spherical curvature

透镜焦距及球面曲率的测量

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The system can solve these calculative problems such as three-peak coordinates of spherical triangle, spherical triangle's area and perimeter, angle size and side length etc, and temporal complication of design is rather superior.

本系统对球面三角形的计算问题如：球面三角形的三顶点坐标，球面三角形的面积、周长、角的大小、边的长度等都得到了解决，并且设计的时间复杂度较优。

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At first, the particle is considered as a highly aberrated spherical lens, so that its focal length is gained, and then the equivalent thin lens is found under the condition of the equal focal length and equal light distance.

首先将颗粒作为高象差的球形透镜求出其焦距，再由等焦距和等光程条件找出与球形透镜等价的薄透镜。

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The free through-feed grinding method is adopted to grind the OD of small sized non-symmetric spherical rollers on centerless CD grinder with common corundum guide wheels, i. e. grinding slopes with same angle but different length on both sides first, then going on through-feed grinding.

采用自由贯穿磨削方法，在无心外圆磨床上用普通砂质导轮磨削小型非对称球面滚子外径，即先在圆柱滚子两端磨出角度相同但长度不同的斜度，然后进行贯穿磨削。

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Focal length measurement of spherical lens using joint Fourier transform spectrum interference technique

利用联合付里叶变换谱干涉法测量透镜焦距

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