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The problem was not solved completely until the invention of the marine chronometer in the eighteenth century.

这个问题直到十八世纪发明了航海经线仪才得以解决。

By this means, the problem of deciding whether an n x n doubly stochastic circulant matrix A of order 3 is a prime is completely solved.

应用此原理，本文完全解决了判别具有位数3的n阶双随机循环矩阵是否为素元的问题，并给出了n阶双随机循环矩阵中一类具有位数4的素元。

Circular arc recognition is a difficult problem that is not entirely solved in engineering drawing recognition and understanding research field.

在工程图纸计算机输入识别和理解系统中，圆和圆弧的识别转换是一个尚未彻底解决的难题。

Due to the coupling of every Zernike circular polynomial in the annular field, the SEIDEL coefficients solved by wavefront fitting with circular polynomial for annular pupils with big central obscuration would have larger errors.

由于Zernike圆多项式各项在环域上的交叉耦合，对于具有大中心遮拦的环孔径波面采用圆多项式拟合求解SEIDEL像差系数存在较大误差。

Thus, evaluation of the minimum zone circle could be solved effectively.Three methods of assessment of roundness error were proposed in this dissertation. Based on the criteria of the minimum zone circle, minimum circumscribed circle and maximum inscribed circle and convex hull, a unified approach was proposed to evaluate roundness error of the minimum zone circle, minimum circumscribed circle and maximum inscribed circle. Evaluation of the minimum zone circle, minimum circumscribed circle and maximum inscribed circle was fulfilled with rotation based the contact pattern. The minimum circumscribed circle and maximum inscribed circle were evaluated with curvature and the curvature circle.

本文提出了三种圆度误差评定的方法：根据最小区域圆、最小外接圆、最大内接圆在极坐标系下的判别准则，利用计算几何中的凸壳理论，提出了一种统一的评定方法，实现了对最小区域圆、最小外接圆、最大内接圆的误差评定；基于接触斑点的检验原理，利用旋转法，实现了最小区域圆、最小外接圆和最大内接圆的误差评定；利用曲率和曲率圆，实现了对最小外接圆和最大内接圆的误差评定。

How to ruduce the content of citrinin is a problem need to be solved urgently.

红曲的药用价值和保健功能日益引人关注，然而红曲中桔霉素的存在严重制约着红曲产品的开发，如何降低红曲桔霉素的含量是一个迫切需要解决的问题。

The clear-up rate for specific types of crime remains constant throughout, however: on average, 80% of cases involving murder or bodily harm, and 60% of sexual crimes were solved, as compared to a low figure of only 25% in the cases of theft.

明确率为特定类型的犯罪仍然不断在整个却是：平均而言， 80 ％的案件涉及谋杀或身体上的伤害，并有60 ％的性犯罪，解决了，比较低的数字，只有25 ％，在失窃案件。

The clime of our customer was not solved perfectly, but this was not affecting our feelings.

去客户处处理的问题不是很圆满，但是工作不能影响我们的情绪。

Using a perturbation method, these linearized equations are solved for a composite sphere with the charge densities of the rigid core surface and of the surface layer as the small perturbation parameters. Analytical expressions for the settling velocity and electrophoretic mobility of the composite sphere in closed form have been obtained from a balance among its hydrodynamic, electrostatic, and/or gravitational forces.

以复合粒子之固体核心表面的电荷密度和多孔性表面层内的固定电荷密度为二个微小扰动参数，应用正规微扰法来求解这些已线性化之主导方程式，再藉平衡作用於复合粒子的重力、静电力和流体阻力等三种力后，可得到带电球形复合粒子的沉降速度及电泳可动度的解析形式表示式。

The capacity problem of Web server can be solved by Web cluster technology. The key point is load balancing strategy and algorithm.

Web集群技术解决了Web服务器系统的容量问题，其核心思想是负载均衡策略和算法。

I hope that this success is just the first in a long series.

我希望这只是成功的开始。

Three dimensional stresses on the interface of tire and soil, tire deflection and soil sinkage are measured.

测试轮胎——沙土界面上的三向应力、轮胎变形和沙土沉陷；建立考虑剪切应力对沙土承载特性产生影响的车轮牵引性能预测模型；分析车轮作用下土壤的纵向稳定性。