坐标系统

This paper brings up with the theory of Virtual Coordinate Measuring System. The basic theoretic models of the virtual coordinate measuring system are given. This theory of virtual coordinate measuring system makes use of the principle of Time-Space correspondence and turns the time pulses into spatial displacement. The virtual coordinate measuring system can take the place of the scale system in traditional instruments, which has the disadvantages of high cost and difficulty ofproduction.

本文同时提出并建立虚拟坐标测量系统理论；该理论从传统的测量仪器出发，将传统仪器的实物标尺系统虚拟化，克服了实物标尺系统加工制造困难，及造价高等缺点，将硬件结构简化；本文提出并建立初步的虚拟坐标测量系统模型，并在三坐标测量机上建立了一维虚拟坐标测量系统的实验模型，初步分析系统的系统误差与其随机误差源。

According to the analysis and simulation of this process, some suggestions are raised which are helpful to improve Meiyu front forecast ability in real time operation, such as using some new remote sensing data and the time and space densified data, strengthening the analysis of the mesoscale numerical model products, through the man-machine interaction to analyze more diagnostics and the air mass features based on different vertical coordinate systems.

6根据对本次梅雨锋的分析和模拟结果，提出了在目前实时预报业务中改进对梅雨锋暴雨预报能力的一些建议。包括对新的遥感资料和加密资料的使用、加强对中尺度数值模式资料的分析、通过人机交互方式分析更多的诊断量和利用不同垂直坐标系统分析气团特征等。

The parameters of the machine are measured by no-load test and short-circuit test. The relationship between the exciting current and corresponding air-gap voltage at the rated frequency is obtained, thus determining expressions for exciting inductance and exciting current in linear segment form. The equivalent circuits in a/30 reference frame are based on the parameters by above tests.

通过空载实验和短路实验对异步电机的参数进行了测量，由额定频率下的空载实验测得不同激磁电流与相应的气隙电势，给出了激磁电感与激磁电流的分段线性表达公式，为得到αβΟ坐标系统下的等值电路奠定基础。

Research results:This paper concluded the main technical standards of the control points for ballastless track laying on passenger dedicated railway lines, and the horizontal control of precise construction traverse and GPS survey.

研究结果：得出了客运专线无碴轨道铺轨控制基标、施工精密导线以及GPS平面控制的主要技术标准，并提出投影变形控制及施工坐标系统设计的建议。

It has unique architectural configuration,complex functions and big construction difficulties.A lot of technologies were applied to the construction to meet the design requirement and guarantee construction quality,such as tie plate or connector between profile-steel concrete column and steel beam,melted groove welding for steel bar ...

施工中采用包括型钢混凝土施工技术、型钢柱与混凝土梁采用连接板及连接器的应用技术、钢筋熔槽焊连接应用技术、自密实混凝土应用技术、录音棚房中房模板设计、弧形看台与斜柱施工技术、舞台桁架高空散拼施工技术、大型屋面钢网架安装技术、桁架整体提升技术、复杂形体幕墙安装技术、8坐标系统测量控制技术等，满足了设计要求，保证了施工质量。

Based on the nonlinear geometric relation between strain and displacement of flexible cable , the equilibrium equation under self-weight and influence of temperature are established and an analytical solution of displacement and tension distribution defined in Eulerian coordinate system is accurately obtained.

根据柔索应变与位移的非线性几何关系以及自重作用和温度影响下的平衡方程，采用欧拉描述的坐标系统精确地求得了各点的位移和张力的解析解。

On the basis of nonlinear geometric relation between strain and displacement for flexible cable, the equilibrium equation under self-weight and the influence of temperature, an analytical solution of displacement and tension for every point defined in Eulerian coordinate system is obtained accurately.

根据柔索应变与位移的非线性几何关系以及自重作用与温度影响下的平衡方程，采用欧拉描述的坐标系统，精确地求得了各点的位移和张力的一般解。

On the basis of nonlinear geometric relation between strain and displacement for flexible cable, the equilibrium equation under self-weight and influence of temperature, an analytical solution of displacement and tension for every point defined in Eulerian coordinate system is obtained accurately.

根据柔索应变与位移的非线性几何关系以及自重作用与温度影响下的平衡方程，采用欧拉描述的坐标系统精确求得各点的位移和张力的一般解。

Measured from the geographic coordinate system, Japan is 36° north of the equator and 138° east of the Prime Meridian.

从地理坐标系统来衡量，日本是36赤道和138 °以东本初子午线°以北。

In the reference frame,mathematic model and dynamic equivalent circuit was built.

在d-p坐标系统下，构建了同步发电机的数学模型以及动态等效电路。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。