精度

Angular position testing system is the reader-out unit of testing turntables, so theprecision of the whole system is depended on it.

角位置测量系统是转台系统的角位置读出装置，所以整个转台系统的控制精度就主要取决于测角系统的精度。

Combined the genetic algorithm with least square method and based on the result of least square method to synthesise plane-wave,we use the genetic algorithm to optimize plane wave by seeking the best amplitude and phase of element of array.

测量精度的高低直接取决于该平面波的质量，平面波质量越好则测量精度越高[1]。因此，寻求一种最佳算法使综合出的平面波质量越好，对近场测量系统显得尤为重要。

The main factor that affects the precision of FOG is its drift. As filtering can eliminate the drift effectively, it can improve the north-seeking precision.

影响光纤陀螺寻北仪精度主要因素是陀螺漂移，通过滤波能有效地克服陀螺的漂移，从而提高精度。

The analyses of theory and results of experiment show that, in the condition of the same north-seeking points, the less position error is, the higher north-seeking precision is; in the condition of the same position error, the more north-seeking points are, the higher north-seeking precision is.

理论分析及实验结果表明，在相同寻北位置数的情况下，转位误差越小寻北精度越高；同时在一定的转位误差时，寻北位置数越多则寻北精度越高。

In order to reduce the influence of position error in every standstill-position of turntable on north-seeking precision, the work process of the Dynamically Tuned Gyro multi-position north seeker and the principle of the azimuth arithmetic are introduced, and the relation between position error and north-seeking precision is analyzed.

针对实验过程中转台在每个转位处存在的转位误差对系统寻北精度的影响，介绍了动调陀螺多位置寻北仪的工作过程及真北解算原理，进行了转位误差对寻北精度影响的误差分析。

And Finally according to theprogramed algorithms, simulation and experimental stitchings are porformed for testing thealgorithm accuracy. Results show that, the comprehensive errors of theretical andexperimental wavefront stitchings are less than 10~(-6)λand than PV/10 (where PV refering towavefront peak-to-vally value), respectively. Furthermore, experimental research isconducted on the influence of stitching accuracy by sub-aperture overlapping area andstitching modes, with subaperature real-time stitching test for large plano-optic broughtabout.

第三，对编写的算法程序进行了模拟拼接实验和实际拼接实验，测得该算法程序的精度为：理论拼接波面的综合误差小于10~(-6)λ，实际拼接波面的综合误差小于PV／10(PV为被测波面相位峰谷值)；在此基础上，又就子孔径重叠区域大小和拼接模式对拼接精度的影响进行了实验和分析，实现了大口径光学平面的子孔径实时拼接检测。

Because the variation of the light source and other errors related to light intensity are not so critical for the measurement in this system and some 1/4λ wave-plates affect on the other wavelengths is very little, the retardance can be measured in high accuracy and high repeatability. In principles, the system accuracy can measure any retardance, and can be used in characteristic spectrum analysis of other phase retarders.

由于此系统可忽略光强的波动及与光强有关的误差，且1/4λ波片对多波长测试误差的影响很小，故其有很高的精度和可靠性，可以测试其精度范围内的任意小延迟量，亦可对其他光学相位延迟器件进行光谱分析。

Thestandard optical pyrometer of this pyrometers is the standard instrument used at thehigh temperature zone of the international practical temperation scale,But wanting to have the meas-ured temperature,the value of the effective wave length must be determined.

光学辐射高温计是高温测量中精度最高的仪器，其中的基准光学高温计是国际实用温标高温区的标准仪器，但欲得到被测温度，需确定有效波长值，本文探讨了影响有效波长的因素及其计算方法，并讨论了它对测量精度的影响。

Multi-point forming experiments of titanium cranid protheses show that precision of the workpiece is improved significantly via the closed-loop multi-point forming method. And precision digital forming for sheet metal parts is accomplished based on multi-point forming techniques and rapid laser scanning measurement.

结果表明，基于快速测量的曲面多点成形精度控制技术充分利用了多点成形的快速性的特点，通过三维空间形状反馈，来提高多点成形的精度。

The precision of the press is high, the lower part of the press plate is a straight line guide.

压合精度高，压合板下部独有直线导轨，充分保证高精度平行压合。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。