坐标系统

Pseudo-random multi-frequency signal is invented and named by academician He Jishan. The bandwidth of PRMF signal is controllable, it's energy concentrates on several frequencies, which are equally spaced on log scale coordinates. It is ideal excitation source for electrical exploration.

中文题名伪随机多频电磁法观测系统研究副题名外文题名 The study on pseudo-random multi-frequency electromagnetic prospecting system 论文作者陈儒军导师何继善学科专业地球探测与信息技术研究领域\研究方向学位级别博士学位授予单位中南大学学位授予日期2003 论文页码总数165页关键词电法勘探电磁法伪随机多频信号馆藏号BSLW /2003 /P631.3 /4 伪随机多频信号由何继善院士发明和命名，该信号带宽可控，其能量集中在数个在对数坐标上呈等间距分布的频率上，是电法勘探的理想场源。

As the maturest industrial photogrammetry system,V-STARS is attented about its measurement accuracy.

作为当今最成熟的数字摄影大尺寸三坐标测量系统，V-STARS的测量精度一直受到关注。

As the maturest industrial photogrammetry systemV-STARS is attented about its measurement accuracy.

作为当今最成熟的数字摄影大尺寸三坐标测量系统，V-STARS的测量精度一直受到关注。

The forward observer serves as the eyes of the artillery battery, calling target locations and adjustments to the Fire Direction Center, which translates their spottings into firing solutions for the guns.

前线观察员就是火炮连的眼睛，向火炮控制中心传达目标位置并校正，将目标坐标传输到火炮系统以便进行攻击。

The general speedup techniques that concentrate on expediting spatiotemporal coherence from one frame to the next usually uses simplified forms of 3D warp, that is, pixels in current frame are transformed to succeed frames. The approaches of synthesizing images by using optic flow or tensor are under the frame of 3D warp.

McMillan的论文[54]首次详细讨论了单个平面投影图象的3D warp坐标变换公式及其变换过程的兼容可见性扫描算法，本论文在前人工作的基础上，从单个采样图象变换、多个采样图象变换合成、反向变换以及增加镜面反射光等方面深入而系统地研究了3D warp变换进行场景建模和快速绘制的理论和算法。

Applicable to high-precision coordinates grinder spindle lubrication, and other precision machine tool spindle, bearing lubrication, low pressure systems can also be used as hydraulic oil.

适用于高精度坐标磨床主轴的润滑，和其他精密机床主轴、轴承的润滑，还可以用作低压系统的液压用油。

Slave Will's jump coordinates through the NAV system and give us a thirty-second countdown.

自动引导威尔的跃迁到导航系统的相应坐标，给我们三十秒倒计时。

Exhibition hall is divided into four, nine galleries, one of electric and magnetic layer for the area, power and machinery area, math section, the universe and Space Pavilion, set up a high-voltage discharge, electric magnetic Gallery, bowls, a typical mechanical transmission, three-dimensional coordinates and other exhibits; the second floor for the sound and light booth, Applied Technology Pavilion, set up a light display, three-dimensional holographic images, sound simulation, laser laser, simulated driving and other exhibits; three for the Life and Health Pavilion, set up a false impression cylinder, fitness tests, brain and facial features, body systems, such as exhibits; underground floor for temporary exhibitions; in the Office of the Hebei Academy of Sciences set up a pavilion style.

展厅共分四层，九个展区，其中一层为电与磁展区、力与机械展区、数学展区、宇宙与航天展区，设置了高压放电、磁电廊、滚球、典型机械传动、三维坐标等展品；二层为声与光展区、应用技术展区，设置了光路展示、全息立体影像、声音模拟、激光内雕、模拟驾驶等展品；三层为生命与健康展区，设置了错觉滚筒、体能测试、大脑与五官、身体各系统等展品；地下一层为临时展览；中厅设置了河北院士风采展区。

Three regional climate models (MM4,RegCM2 and P-σ incorporated coordinate model)have been used to simulate the regional climate over eastern China in July .It is found that these three models have different performances in simulating different climate elements such as 500 hPa geopotential high field ,temperature fields,sea level pressure and rainy belt location.The results are important for developing regional climate model system which is suitable for eastern China and improving the simulation and forecast results.

利用MM4中尺度数值模式、RegCM2模式和P-σ混合坐标五层区域气候模式，以GFDL多年平均的6月份气候场作初始场，对我国东部地区7月份的区域气候进行数值模拟，比较、检验了三个模式模拟中国东部区域气候的性能，发现对500 hPa高度场、温度场、海平面气压场、雨带位置等不同的模拟对象，三个模式各有优劣，其结果对于发展适合我国东部地区的区域气候模式系统、改进模拟和预测效果具有一定的参考意义。

With a history of nearly 50 years, the Institute has researched and developed the following major technologies and products: vertical/horizontal machining center, precision and ultra-precision machine tool,ball screw, coordinate measuring machine and other precision measuring instruments and equiment,pneumatic-hydraulic/electro-hydraulic technology and concerned products; EDM technology and equipment; NC system and driving device; laser machining technology and relative product; computer application technology,etc.

北京机床研究所具有国内领先的技术水平和实力及近五十年的数控机床技术开发、应用、维护经验，为用户提供全程的、全方位的技术支持服务。近五十年来，我们从事研发的主要技术与产品有：立卧式加工中心；精密及超精密机床；滚珠丝杠副；三坐标测量机及其它精密测量仪器设备；气液电液技术及相关产品；电加工工艺及设备；数控系统及驱动装置；激光加工技术及相关产品；计算机应用技术等。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。