1.
Two events that occur at the same moment if observed from one reference frame may occur at different moments if viewed from another.
从某个参考坐标系来看，同时发生的两个事件，对于另一坐标系而言，可能就发生于不同的时刻。
2.
Internal stops provide positive over travel protection for power actuated valves and act as a reference to position the discs in the open and closed positions.
内置的止动装置为动力执行机构提供行程保护，并且作为参考坐标在开启和关闭位置定位阀瓣。
3.
one of the fixed reference lines of a coordinate system.
一个坐标系中的固定的参考线。
4.
All coordinates refer to equinox 2000.0.
星图的所有坐标皆以／（2000.0）为参考。
5.
Geospatial Coordinate Reference System Fusion Engine and Practice;
地理空间坐标参考系融合引擎及实践
6.
A reference line from which distances or angles are measured in a coordinate system.
座标轴坐标系中测量距离和角的参考线
7.
A Derivation of Velocity and Acceleration in Spherical Coordinate by Rotation Reference Frame Method;
球坐标系中速度与加速度的转动参考系求法
8.
Study on the Characteristics of Crustal Movement and the Quality of Geocentric Reference Frame in China
我国现今地壳运动特征与地心坐标参考框架质量研究
9.
The variational parameter multiplying each coordinate is called a scale factor.
每个坐标所乘的变分参数叫定标因子。
10.
The Moving 9 Parameters Coordinate Transformation Method for GPS Coordinate Results
GPS坐标成果的游动九参数转换法
11.
The Way of Conditional Adjustment with Parameters in Two Dimensional Coordinates Transformation
二维坐标转换的附有参数条件平差法
12.
Parameter-calculating Method for Coordinate Transformation of GPS Handset
手持式GPS坐标转换参数解算方法
13.
areal coordinates
重心坐标, 面坐标
14.
They form a three-parametric, orthogonal net and may be chosen as coordinate lines of a special, curvilinear coordinate system.
它们形成三参数正交网，可以把它们选作特殊曲线坐标系的坐标线。
15.
Parameter calibration method for an articulated coordinate measuring machine with laser tracker
基于激光跟踪仪的关节式坐标测量机参数标定
16.
certified reference material
检定合格标准参考物质
17.
Measurement of Gear Parameter and Accuracy Using 3D Coordinate Measuring Apparatus;
齿轮参数和精度的三维坐标测量仪检测
18.
Research on the Measurement Uncertainty of Circular Features in Coordinate Measurements;
坐标测量法中圆参数测量不确定度的研究