New accurate formulas of ordinary trigonometric leveling and EDM -height measurement have been set up.
本文根据水准面、似大地水准面、参考椭球面、高程异常、垂线偏差与正常高之间的关系，推导出了新的普通三角高程测量及光电测距三角高程测量的精密计算公式，并对新公式进行了初步的实验验证。
Using mechanical energy conservation law,the simple pendulum period is analyzed and its exact formula is given.
单摆的周期是物理学中的一个基本问题,通过力学分析,建立了单摆的动力学方程,用机械能守恒定律分析了单摆周期,并给出了精确公式。
In this paper, the point precision formulas and the formulas for calculatingpoint error elilpse parameters for normal and convergent photograph, are derived by geometric method and then are used to analyse point precision.
本文应用几何法推导出正直、文向摄影的点位精度公式和计算点位误差椭圆参数公式，由此用于点位精度分析。
When some test results was dealt with,an odd problem was found that the rotation-symmetrical stress calculated from Rami's formula couldn't according with the test phenomena if the ratio between outer radius and the inner radius was more large for the cement cylinder with thick wall.
在处理试验资料时,偶然发现当厚壁筒试样的壁厚过大时,采用拉密公式计算的轴对称应力成果,与试验现象有所出入。
Accurate control of compression through close tolerances of gasket groove and allowance for radial expansion.
通过密封环槽的精密公差和径向膨胀的修正来进行压缩的精确调整控制。
" Tolerances for fasteners--Bolts, screws and nuts for fine mechanics"
GB/T3103.2-1982紧固件公差用于精密机械的螺栓、螺钉和螺母
Research on Densification Methods for Precise Clock Bias of GPS Satellites
GPS卫星精密钟差的加密方法研究
For serious geometry and dimension tolerance of the3 C product, fine blanking process is a quiet important manufacture of stamping.
精密冲切是因应3C产品之高几何精度及尺寸公差要求所不可或缺的解决手段。
Precision Machinery Import and Export corporation
精密机械进出口公司
Hytec Chemicals International Ltd
精密化工原料有限公司
Study on Error Analysis and Methods of Compensating for the Precision Centrifuge;
精密离心机误差分析与补偿方法研究
Method and Realization of GPS Precise Point Positioning Using Un-differenced Phase Observation;
GPS非差相位精密单点定位方法与实现
Research on interpolation method for IGS precise ephemeris and clock bias
IGS精密星历和钟差插值方法的研究
Error analysis and compensation of 2D precision positioning system
二维精密定位系统的误差分析与补偿
Spherical Precision Grinding System and Error Modeling
回转球面精密磨削系统及其误差模型
PRINCIPLE PRECISION ANALYSIS ON ROTATING PRECISION OF NUMERICAL CONTROL LATHE OF PRINCIPLE AXIS;
精密车床回转精度测试机构原理误差计算
Implementation and Precision Analysis of GPS Precise Clock Estimation System
精密卫星钟差确定系统的实现与精度分析
Effects of Dimensional Tolerance on Sealing Characteristic of O-ring;
O形橡胶密封圈尺寸公差对密封性能的影响
Standard guide for carbon black--Validation of test method precision and bias
GB/T15338-1994炭黑试验方法精密度和偏差的确认
Mach Zehnder heterodyne interferometer for high precision displacement measurement
用于位移精密测量的光外差马赫-泽德干涉仪
Study of the Cylindricity Precision Measurement Technique Based on the Error Separation Method;
基于误差分离的圆柱度精密测量技术研究
Deformation Control and Error Compensation in Precision Machining of Thin-Walled Parts;
薄壁件精密切削变形控制与误差补偿技术研究