内接

The arc data interpolation error by secant, tangent and chord, and the smallest error by secant mode is analyzed in this paper. The relation between the maximum radial error and arc radius and approach step-length in the secant mode of arc data interpolation in CNC system is detailed.

在分析数控系统圆弧数据插补割线方式较切线、内接弦插补方式误差更小的基础上，讨论了数控系统圆弧数据插补割线方式中最大径向误差与圆弧半径和逼近步长的关系。

A right circular cone is circumscribed to a sphere of radius 3 cm, with the base of the cone touching the sphere.

一半径为 3 cm 的球体内接於一正圆锥体。

The criteria of the minimum zone circle method, minimum circumscribed circle method and maximum inscribed circle method were researched and the criterion of obtuse triangle was proposed.

研究了圆度误差评定中最小区域圆法、最小外接圆法和最大内接圆法的判别准则，提出了具有最小误差的外接圆和内接圆的钝角三角形准则，使圆度误差的判别准则得到完善。

Based on the criteria of roundness error, the definition of the circumscribed circle and inscribed circle with the least roundness error was given. The solution to the circumscribed circle and inscribed circle with the least roundness error was proposed when they met with the criterion of obtuse triangle.

根据圆度误差评定的判别准则，给出具有最小误差的外接圆和内接圆的定义，并提出了解决具有最小误差的外接圆和内接圆满足钝角三角形准则时的误差评定方法。

Moreover, it is proved by means of a totally different method that every central symmetric closed convex curve admits an inscribed square.

进而用全新的方法证明了每一个中心对称的闭凸曲线均能内接一个正方形。

Given a hexagon inscribed in a conic section , the three pairs of the continuations of opposite sides meet on a straight line , called the Pascal line .

已知一个六边形内接于一条圆锥曲线，那么这个六边形对边的交点位于同一条直线上。

"To enclose within a configuration of lines, curves, or surfaces so that every vertex of the enclosed object is incident on the enclosing configuration."

用直线、曲线或面的结构围绕，使被包围物的每个顶点都内接于该结构。

The convergence effect of reflected light was simulated in the paraboloid connected with small plane mirrors.

利用小平面镜逼近抛物面的方法研究车灯线光源的设计问题，通过在抛物面内内接小平面镜模拟抛物面反射光线的汇聚作用。

If the lengths of the sides of a cyclic quadrilateral are 9, 10, 10 and 21 respectively, find the area of the

一圆内接四边形的四边长为9，10，10和21，求该圆内接四边形的面积。

Our result not only focuses on the existence of inscribed square, but also provides more information about the relationship between the inscribed square and the Minkowski plane generated by the curve in which the square inscribes.

我们的结论不但关注内接正方行的存在性而且给出了内接正方形与它所在的Minkowski平面之间新的关系。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。