角曲线

For the ill conditioned load flow caused by the error produced in the transformation from electricity quantities to average power, direct current load flow and sensitivity vector are presented to find out the ill node, then by adjusting the load curve and generation curve in a certain principle, which is shown in detail with several flow charts, a new operation mode is reestablished to ensure the convergence of the calculation. Optimal multiplier method is proposed to work out the least square solution according to ill conditioned structural power network. The electricity quantities flow method enhances the reliability and accuracy of the calculation of the power transmission losses.

该方法可根据当前输电网中各个变电站24小时的电量记录，利用电量潮流计算对输电网总线损和各条线路损耗进行计算，使计算的精度满足降损措施分析和指标考核的要求；并且对于由负荷出力曲线转化成平均功率计算潮流时引入的误差，进而导致潮流计算不收敛的情况，采用直流潮流法，依据相角对有功功率的灵敏度向量判断出"网络异常点"，并且给出了解决此种情况的方法流程图；针对结构病态的电力系统潮流计算不收敛的情况，运用非线性约束优化方法中的最优乘子法求解潮流方程的最小二乘解，从而解决了电量潮流法计算理论线损时的收敛性问题，增强了该方法的适用性。

If we unwind this paper, each point on the angular edge generates an involute curve.

如果我们放松了，每一个点上的角边生成一个渐开曲线。

The simulation results of the blade root load and the power curve of aerodynamic performance on the wind turbine are obtained.

使用这些全攻角翼型气动性能数据，在Bladed软件中建立风电机组的叶片模型，分析计算该叶片的气动性能、整机功率曲线等性能。

Based on the analysis of calculation theories on magnetic field and torque of permanent magnetic gears, the characteristic curve of torque-angle are calculated with the use of Ansoft electromagnetic calculation software.

本文在分析永磁齿轮磁场和转矩计算理论的基础上，利用Ansoft 电磁计算软件计算了平行轴永磁齿轮的矩角特性曲线，并研究了恒定负载下永磁齿轮的转速波动情况。

Abstract］objective:we report a new approach for correcting hypertrophic mandibular angle and masseter through posterior external auricular approach.

摘要］目的：介绍一种治疗下颌角与咬肌肥大的新方法。〖ht5h〗方法：针对不同病例外耳后进路切口设计为两种曲线切口。

METHODS: Human IPE cells were isolated by enzyme-assisted microdissection method and cultured in plates.

采用酶辅助的显微分离法对成人眼进行IPE的原代和传代培养，观察其形态；以不同浓度的层黏连蛋白（0，1，5，10mg/L）处理第3代IPE细胞，MTT法作出生长曲线，免疫荧光法检测细胞角蛋白1（CK1）表达的变化。

As a result,the tooth profile equations, helix angle equations,limit curve equations and induced normal curvature equations for worm and internal gear are obtained.

介绍了一种新型的传动机构超环面行星蜗杆传动，运用啮合理论的包络法建立了这种传动中行星轮与蜗杆、行星轮与内齿轮啮合的基本方程，进而得到了蜗杆和内齿轮的齿面方程、螺旋升角方程、界限曲线方程及诱导法曲率方程等。

The 2-D average water depth mathematical model in orthogonal curve-linear coordinate system is used for the numerical simulation.

应用正交曲线坐标系下的二维水深平均数学模型，对大扩散角的正向泵站前池中设置隔墩前后的流态进行了数值模拟，以分析设置隔墩的整流效果。

The influence of stagger angle of axial flow fan upon the operation performance of parallel running was obtained.

该文在2台风机并联运行的基础上，绘制并联风机的性能曲线，获得叶片安装角对并联风机运行特性的影响。

By computer simulation, we analyze the influence of the incidence plane, incidence angle and thickness of air gap on transmittance, and the dependence of the transmittance on wavelength is given in the spectral range which is required by the instrument system using Sellmeier dispersion equation. The transmittance of Grand-Taylor prism is tested in experiment, and the results are in good agreement with the theoretical results, so the correctness of the theory is verified.

论述了自行设计研制的偏振干涉成像光谱仪的工作原理，分析了其核心部件格兰-泰勒棱镜的分光机理；运用光线追迹方法，推导出了格兰-泰勒棱镜全视场角透过率计算公式；通过计算机模拟分析了入射面、入射角和空气隙厚度对该棱镜透过率的影响，并利用方解石Sellmeier色散方程，给出了该棱镜在仪器系统要求的光谱范围内透过率与波长的关系曲线；实验测试结果与理论计算公式相符，验证了理论公式的正确性。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。