直角

As engineering activities related to groundwater are getting more and more complicated,seepage problems in arbitrary rectangular coordinates system can be often met.

随着与地下水有关的工程活动的逐步复杂化，任意直角坐标系下潜水渗流问题日渐多见。

Nevertheless, FDTD algorithm is implemented in rectangular mesh of Cartesian coordinates system. The curved boundaries must be approximated by staircases.

然而，FDTD算法是在直角坐标系的Yee网格下展开的，对弯曲界面只能用阶梯近似，从而带来很大误差。

This unit content is to be on the image basics that had learned department of planar rectangular coordinates, function, make a student farther understand the intention of function, the linear that exists between the amount in feeling real world concerns, how does experience apply linear function knowledge to solve real problem.

本单元内容是在已经学习了平面直角坐标系、函数的图象基础上，让学生进一步理解函数的内涵，感受现实世界中数量之间存在的线性关系，经历如何应用一次函数知识解决实际新问题。

Above all by hand in dc network to the coupling between concerns and be changed stream implement changeover equation, derivation gives rectangular coordinates to fasten matrix of the Jacobi that makes dc system, Hessian, the means that offers section to seek solution in the light of the change that makes dc system control fashion next begs solution voltage to stabilize the usable transmission ability below tie condition.

首先由交直流网络间的耦合关系和换流器转换方程，推导出直角坐标系交直流系统的Jacobi、Hessian矩阵，然后针对交直流系统控制方式的改变提出分段求解的方法求解电压稳定约束条件下的可用传输能力。

Application of gas sensor based on rectangular prism in the monitoring of atmospheric visibility.

基于直角棱镜的气体传感器在能见度测量中的应用。

High detection sensitivity of 120 ppm can be achieved by using wave division mutiplexing technique, gas absorption cell with rectangular prism and digital match filter for the processing of weak signals which measurement accuracy of wavelength can be highly enhanced.

系统以ELED作为宽带入射光源，利用甲烷在光纤低损耗窗口波段的吸收特性，利用波分复用技术和直角棱镜吸收池，并采用提高波长检测精度的DMF对微弱信号进行处理，使得系统的灵敏度达到120 ppm。

During the simulation, surface current from primary electrode is computed. Taking rectangular triangle as the mesh unit, the integral formula of surface current can be simplified to a product of a difference expression and the surface area. So the computation complexity of FEM will be decreased and the time-cost will be cut down greatly.

在模拟过程中，需要计算主电极表面电流，通过选用直角三角形作为离散单元，将表面电流的二重积分表达式简化为一个差商表达式与主电极表面积的乘积，极大地降低了有限元分析的复杂度，减少了计算时间。

A fast mesh generation method with "Slice Method" to generate regular and irregular veridical hexahedron meshes of casting and mold is developed.

本文描述了一个快速生成均匀和非均匀直角六面体网格的"切片法"网格剖分方法。

This is a very precise method for getting the right angle.

这是一个非常准确的方法获取直角。

This is a right angle ; that is a sharp angle.

这是一个直角，那是一个锐角。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。