Analysis on Method Establishing High Accuracy Datum Plane;
高精度基准平面建立方法分析
Study on affection of the angle errors of pentagonal prism on establishing datum plane;
五角棱镜角度误差对建立大尺寸平面基准的影响
According to the operating principle and characteristic of pentagonal prism, it is analyzed that the fabrication error of the prism angles and the effect of lateral displacement of exit beam when the prism has a motion relative to the incident beam on the accuracy of the datum plane to be established.
从五角棱镜的原理和特性出发，叙述了利用五角棱镜扫描建立大平面基准过程中，由于加工角差和当五角棱镜相对入射光束有相对运动时其出射光束的横移对平面基准的影响，提出了用衍射成像技术消除光束横移，数据计算修正棱镜的角度差的影响。
The horizontal datum and two-pass statics method gave minimum depth error on time section.
试验结果表明 ,采用水平基准面两步法静校正 ,时间剖面反演深度误差最小 ;当基准面远离地表时 ,水平基准面一步法静校正也会产生较大的误差 ;非水平基准面两步法或一步法静校正 ,基准面的起伏越大 ,反演的深度误差越大 ,甚至出现构造假
parallel to or in the plane of the horizon or a base line.
与地平线或者基准线平行，在地平面或者基准平面上。
Automatic-leveling system for base-plane of large-size photoelectric equipment
大型光电设备基准平面自动调平系统
Corrected Error of Base-plane for Vehicle-borne Photoelectric Theodolite
车载光电经纬仪基准平面测角误差修正
at right angles to the plane of the horizon or a base line.
与水平面或者基准面成直角。
altitude over target
以目标平面为基准的高度
chart datum level
海图基准面海图基准线
Application of Penta Prism in Establishing the Datum Plane for?Measuring Flatness in Large Scale Dimension
五角棱镜在建立大尺寸平面基准中的应用
Research on Datum Transformation and Urban Control Network s Relative Factors;
基准转换与城市平面控制网若干问题研究
Global Calibration of Multi-sensor Vision System Based on Two Planar Targets
基于双平面靶标的多视觉传感器现场全局校准
Use to add a datum on a plan view. Elevation view symbol can be shown or hidden.
用于在平面图中添加基准。可以显示或隐藏正视图符号。
Study on affection of the angle errors of pentagonal prism on establishing datum plane
五角棱镜角度误差对建立大尺寸平面基准的影响
Chemical Reaction at Slag/Metal Interface during Quasi-steady Welding Based on Non-equilibrium Thermodynamics;
基于非平衡热力学的准稳态焊接钢—渣界面化学冶金行为
Measurement of the Pavement Elevation Based on Inertia Benchmark
惯性基准高程测量方法在路面平整度检测中的应用
Nanoscale Measurement Technique of In-Plane Motion for MEMS Based on Correlation Fitting Calibration Method
基于相关拟合校准技术的MEMS平面微运动纳米精度测量
32-channel MMW Focal Plane Imaging Calibration Based on Data Dependence
基于数据相关性的32通道毫米波焦平面成像校准研究
This fixture should be provided with a reference leveling surface, so that it can be kept level as the balance deflects.
这种装置应该有一个水平基准面，以便在天平变形时能够使之保持水平。
The hypothetical surface of the earth that coincides everywhere with mean sea level.
大地水准面处处与平均海平面一致的大地水准面
metre above Principal Datum [mPd]
主水平基准以上……米