查询词典 accuracy grade

In these processes, we have proved that the positioning accuracy of the REV-2000 we used has already reached decimeter level. If the accuracy of carrier phase can be improved, positioning accuracy may become better then decimeter level.

以上实验证实REV-2000接收模组经本文所提处理流程对於相对定位精度均已可达公寸级，若相位观测量精度能有所改善，则定位精度应可进一步提升。

In the device, a four-post frame was adopted, two synchronously rotating grip holders were used to realize rigidity rotation of the specimen, and the axial movement of the upper grip holder implemented the tension/compression loading. Positioning accuracy in the axis, radial and circumferential directions were achieved by adopting many advanced and delicate technologies. Measurement on the device indicated that the actual positioning accuracy of the device was better than the kinematic positioning accuracy. Evaluation test on the system indicated that the spatial resolution is better than the pixel size without considering the noise.

该装置采用了四柱式框架结构，采用上下夹头同步转动实现试件相对于框架的刚性转动；上夹头作相对于框架的轴向运动实现对试件的加载；在加载和转动装置中采用了诸多高精技术，实现了试件高精度的轴向定位、径向定位和刚性角度定位；对装置的精度检测表明其实际的定位精度优于运动学定位精度要求；对系统的计量考评初步表明，系统不计噪声的空间分辨率优于X射线CCD的像素10.9μm。

Result: Appearing rate of case in the group is examined 100%; TNM phased rate of accuracy is 91%; it is 95% to assess accuracy before the operation; the examining out rate of lymph gland is 96%; the rate of accuracy is 100%, the same as operation result.

结果：本组病例病灶检出率100％，TNM分期准确率为91％，术前评估准确性为95％，淋巴结检出率为96％，准确率为100％，与手术结果相同。

This thesis focus on GPS application in magnetic suspension engineering:① the formulation of oblique cylindrical projection is worked out according to characteristics of long distance precise engineering and map projection theory. The author has developed an application to accomplish coordinate conversion from generally used coordinate systems to oblique Maglev Coordinates System.② considering not only project peculiarities but also position of control points, selection of initial points, connection type, selection of repeat baseline and ground observed quantities, GPS network is designed on electronic map and we may extract GPS network information by program developed using Visual Basic 6.0 while the results are stored in control point file and baseline vector file.③estimate accuracy of various GPS networks designed on electronic map by method of 2D restriction adjustment. GPS network simulation design and accuracy estimate come true.④Predominate the rules how connection type , repeat baseline and precise baseline of range finder influence GPS network precision through comparing accuracy of various GPS network. Thereby, the solution how to establish GPS network in long distance precise engineering is figured out.

本论文主要研究GPS技术在磁悬浮工程中的应用：①根据长距离精密工程的特点，从地图投影原理出发，推导出斜轴圆柱投影的应用公式，并编制计算软件，实现从常用坐标系统向斜轴磁悬浮坐标系统的转换计算；②在AutoCAD电子地图上，根据工程的需要，并充分考虑控制点的点位、起算点的选择、连接方式、重复基线的选择和地面观测量的选择等因素，在电子地图上进行GPS网的设计，根据Visual Basic 6.0语言编程，提取出GPS网资料，保存在控制点文件和基线向量文件中；③对在电子地图生成的各种类型的GPS网进行二维约束平差的精度估算，实现了GPS网的模拟设计与精度估算；④通过对各种控制网的精度比较，掌握连接方式、重复基线、精密测距仪基线对GPS网精度影响的规律，解决了长距离精密工程GPS网的建立方法。

In this thesis, several kinds of spherical curvature measurement methods are introduced, and the "arch-high and chord-length method" is selected after introduction of the existing methods, and then the novel type of instrument for measuring spherical curvature with the variable ring is developed. In research, the grating sensor, integrated circuits and other new technologies are adopted and integrated. As a result of this, Its specific technical indicator is 0.1um in absolute accuracy, 0.01% in relative accuracy, and 0.001% in repeat accuracy.

本文首先对几种球面曲率半径的测量系统进行了深入的理论分析，在分析了各个测量方法优缺点的基础上，选用了"弓高弦长法"的测量原理，并从理论上推导了本文所述系统的可行性，采用光栅传感器、集成电路等新技术成果，将机械、电子技术、计算机技术以及传感器技术有机结合，研制出一种新型的可变径球面曲率测量仪器。

The system schemes are selected in descending probability order. The stopping rule for the state selection is the index accuracy. The relationship between scheme selection accuracy and the forecasting time is also studied. The results show that only a small number of system schemes are required to achieve the high accuracy of the short-term reliability index. Hence, evaluation can be performed in the online environment. The proposed algorithm is applied to the IEEE-RTS.

按照概率大小进行系统状态选择，按照指标精度进行状态截止，并研究了状态截止精度随预测时间的变化关系，表明短期评估只需选择少量系统状态就能满足较高的评估精度，具备在线应用的前景，通过算例IEEE-RTS进行了验证。

Equal-accuracy digital tachometer not only have the higher of measurement accuracy, but also can be keep equal accuracy is in the entire measuring range.

而等精度数字转速表不仅有较高的测量精度，而且能够在整个测量范围内保持相等的精度。

The method of equal accuracy frequency measure can remove the errors of unitage and keep the high accuracy constant in the whole measure frequency segment. So the signal frequency has measured is high or low can't influence its accuracy.

等精度频率测量方法消除了量化误差，可以在整个测试频段内保持高精度不变，其精度不会因被测信号频率的高低而发生变化。

In response to broach dentiform precision molding design and calculation of the degree of difficulty, and enhance the accuracy of processed products, the company's decision to purchase gear in the design of software programs to achieve the required accuracy of customers, and the coming years, and one after another machine tool purchase, replacement, in order to enhance broach manufacturing efficiency and accuracy.

因应拉刀齿型成型之设计精度及计算之困难度，及提升加工产品之精度，本於公司决定添购齿轮设计软体程式，以达客户所需之精度，并於往后数年，陆续添购工作母机，汰旧换新，以提升拉刀制造之效率与精度。

A stereo pair of SPOT-5 imagery acquired in across-track mode is selected and used. The empirical results have shown that the proposed geometric model, compared with the original model which considers the CCD line-scanner side watch angle as a constant, can improve the x-coordinate accuracy of image points, and can also raise the height accuracy of object space coordinates significantly while maintain the same level of the planimetric accuracy.

经对一SPOT-5异轨立体像对的试验表明，利用改进的几何模型和视CCD线阵列侧视角为常数的仿射变换模型对立体影像进行几何处理，前者较后者的像点x坐标精度有一定的改善，物点的高程精度有所提高，平面精度两者基本一致。

They kept badgering him to get a home computer.

他们总是缠着他买一台家用电脑。

For many years the factory has always been committed to improve product quality, beautifying, to meet growth in market needs.

许多年来本厂一直致力于提高产品质量，美化外观，以满足不断增长的市场需要。