直角坐标

The computing of latitude is the key of geodetic coordinate transformation from geocentric coordinate which conventionally uses iterative methods.

大地纬度的解算是从地心直角坐标到大地坐标变换的关键，通常都用采用迭代法实现。

Grid line values are usually placed in the margins of the map.

直角坐标网线值，通常均配置在图边。

Starting with the basic concept about particle transport and the universal form of transport equation, the discuss is concentrated upon the transport equation and the implicit difference scheme under 3-D Cartesian coordinate, as well as the transport equation and the discontinuous finite element scheme under 2-D cylindrical geometry.

从粒子输运的基本概念和输运方程的一般形式入手，重点讨论了三维直角坐标中子输运方程和隐式差分格式，以及二维柱坐标中子输运方程和间断有限元格式。

As three mensurated points, system applies lower double frequency laser ware,which is equal to process double multiplication flatness by right angle coordinate.

当激光测点多于三点时，系统采用低重频激光器，其滤波方式以对直角坐标进行最小二乘法滤波平滑较为合适。

Results Of the 109 cases,the spots of 45 cases platelet volume,platelet quantity on rectangular coordinate chart were outside of the platelet nomogram further more a majority of them were below the platelet nomogram.

结果 109例正常老年人标本中有45例血小板数量与血小板体积在直角坐标图上的点位于逆方图外且大部分位于逆方图下方。

To compensate for nonlinear distortion of RF power amplifiers, a novel adaptive digital predistortion method based on piecewise polynomial was proposed, and multiple lower-odd-order-only polynomials in the form of orthogonal coordinates were used for predistorter design.

为补偿RF功率放大器的非线性失真，提出一种新的基于分段多项式的自适应数字预失真方法，使用多个直角坐标形式的低阶奇次多项式设计预失真器。

In display parts of the above-mentioned system, one key technology of the digital of radar video image has been solved. After A/D conversion and clutter suppression pretreatment, the radar analog data can be converted from polar coordinates to orthogonal coordinates and displayed in real time. Further, the image can achieve higher resolution and display speed in host.

本文所述显示系统中，结合实际需要，解决了该系统中雷达图像数字化的一种关键技术，将雷达模拟回波数据经A/D变换和杂波抑制预处理后，从极坐标到直角坐标实时地转换，并在计算机的光栅扫描显示器中显示，能够获得分辨率较高、实时性较好的雷达图像。

After nest found, the dominating ecological factors with definite distance to nest tree (less than 10 meters) including tree species, tree height, habitat type of nesting-tree, nest position, the type of nesting tree branch, nest type, the type of nest-site, the viability status of tree and branch was described and measured. Geography coordinates (latitude-longitude) was converted into orthogonal coordinates, and add to Arcview3.2 as shape-file, and measured the distance between nest and the habitat type including double-line river, lake, seasonal lake, shallow mire, deep water mire, meadow mire, farmland, sparse forest, forest marsh, the boundary of Nature Reserve and road.

将调查所获得的东方白鹳巢址坐标转换成平面直角坐标，并将巢位点作为Arcview3.2中的矢量图层加入到已经矢量化的洪河保护区生境类型图中，运用Arcview3.2的距离量算功能，量算出每个巢距各生境类型的距离，包括双线河、湖泊、时令湖、轻沼泽、重沼泽、沼泽化草甸、旱田、疏林和森林沼泽，以及距保护区边界和公路的距离。

Network based visual servo system of the orthogonal coordinate robot was proposed,in order to implement grasping job.

本文设计的直角坐标机器人视觉伺服系统是以BP神经网络为控制核心，直接利用目标图像特征实现机器人视觉控制，完成抓取作业任务。

The analytical method is always used due to the large amount of the objects and not very high accuracy of forecasting. A method based on the position and velocity derived from the mean orbit elements directly is given, which is to avoid the problem of singularity in calculating the periodic terms of orbit elements variation, thus the process and software can be simplified.

在已有分析法得到t时刻平均根数的基础上给出一种轨道预报方法，由t时刻的平均根数给出该时刻卫星的位置和速度，在此基础上将地球非球形引力摄动的周期项直接用卫星直角坐标的位置和速度分量表示，这样可以避免在计算轨道根数变化的周期项时出现的奇点问题，从而对根数的选择无特殊要求，可适用于各种轨道，简化预报程序和相应的软件，提高预报效率。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。