精度

Numerical analysis is given in detail. The measure of precision of elliptic-meter not only depend on the structure parameter and reading precision ,but also depend on refraction index of substrate, the range of elliptically polarized angle.

椭偏仪的测量精度除了与它本身的结构参数以及读数精度有关外，还与被测系统本身有关，精度还取决于衬底的折射率n2，的区域及入射角。

The results indicate that the ANN structure and the training sample have some impact on the prediction precision. The real time measured power as input will improve the precision of 30 min ahead prediction, however will decrease the precision of 1h ahead prediction. The results which using the atmospheric data at all different heights as input have a higher accuracy when compared with the results using hub height data only. The designed ANN can forecast the error band.

研究结果表明，神经网络的结构和输入样本对预测结果有一定的影响；实测功率数据作为输入可以提高提前量为30 min的预测精度，而对提前量为1 h的预测精度会降低；把不同高度的数据都作为神经网络的输入比只采用轮毂高度数据的预测精度高；设计的神经网络能够对误差带进行预测。

3Phenological phase of vegetation in different Spatial location from 1982 to 1999 is fitted based on curve. As a result, phenological phase of forest has very coarse fitting precision.

3用曲线拟合的方法监测了植被生长季的空间变化，结果表明，森林物候期的总体拟合精度较低，草原的拟合精度好于森林的拟合精度。

According to the horizontal precision of detail point, it analyzes the horizontal precision of the detail point when using flat, and the horizontal precision of the detail point when using the total station and computer.

从碎部点的平面精度出发，分析了平板测图时碎部点和数字测图时碎部点的平面精度，根据误差传播定律，结合测绘的实际情况，从而推导出两点法已知边推未知边的边长比精度。

This paper discussed the coordinate transformation method of WGS84 coordinate system to 1954-BeiJing Gauss grid coordinate. Introduced transformation model of WGS84 to Beijing 54 and computing method of transformation parameter. According to different model and computing method, computed and compared with the result combine real data. Think that adopt base-line vector quantity ask four parameters model have higher transformation precision.

本文详细讨论了WGS84大地坐标转换到北京54坐标系下的高斯平面坐标的方法，重点介绍了WGS84和北京54的空间直角坐标的转换模型及转换参数的计算方法，并根据不同的模型和计算方法结合实际数据进行计算和结果的比较，认为采用基线向量求解的四参数模型具有较高的转换精度，分区变换和提高控制点精度也能提高转换的精度。

Through model test and data analysis, it is found that the precision of the FFT method is much higher than that of the Fourier Series method in vertical derivative calculation.

通过模型试验和数据分析，发现在计算垂向导数时波数域求导算法的精度比傅氏级数的精度有明显改善；而水平导数的计算，2种方法的精度相当。

Precise gravimeter is an important equipment for improving the precision of inertial navigation systems.

高精度重力仪是提高舰船惯性导航系统精度的重要设备，其重力传感器信号检测回路的性能决定着仪器的精度。

RFRTOS provides kernel preemptability at interrupt level by employing following methods: Tasked kernel services.

与传统是实时核心通过对系统服务的限制来达到快速响应的方法不同，QoS实时应保持系统服务的完整，在这种情况下，核心可抢占精度就成为决定系统服务精度的一个较为重要的指标，而这也是RFRTOS研究的重点，RFRTOS通过以下几个方面工作达到了基于中断服务精度的可抢占核心；核心服务进程化。

Company has first-class product testing equipment and production equipment, with the United Kingdom has 3 Units Laser Interferometer and clubs, one in Taiwan and USA OPTODYNE interferometer; Japan produced a high-precision spindle Balancing Instrument, etc.; Taiwan and the United States 1 16 meters-made CNC gantry milling machine; Taiwan and France one of domestic large-scale landing 13 meters milling Church; Japan OKUMA Horizontal Machining Center; many Units CNC gantry machining centers, gantry rail grinding machine, internal and external high-precision grinder, Horizontal Machining Center, vertical machining centers, jig borer, such as high-precision production equipment.

公司有一流的产品检测设备和生产设备，配备有3台英国的激光干涉仪和球杆仪、一台美国光动的干涉仪；一台日本生产的高精度主轴动平衡仪等；一台美国产的16米数控龙门铣床；一台法国产13米大型落地堂铣床；日本OKUMA卧式加工中心；多台数控龙门加工中心、龙门导轨磨床、高精度内外圆磨床、卧式加工中心、立式加工中心、坐标镗床等高精度的生产设备。

Therefore, the precision of Cylinder decides the installation precision and knitting precision of Needle and further influence the quality of products.

织针是被安装在针筒中，由针筒带动进行针织运动，针筒的精度决定了织针的安装精度和针织精度，从而进一步影响产品的质量。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。