phase determination

relative determination of position of celestial body

天体位置的相对测定

absolute determination of position of celestial body

天体位置的绝对测定

a chart showing the relative positions of the stars in a particular part of the sky.

表明星体在天空中特定部分的相对位置的图。

The altitude/ azimuth grid shows the positions of objects on a map relative to the observer's local horizon.

星图上的高度／位角栅格显示天体的位置时是相对于观测者的地方地平圈的。

Distributed Spacecrafts Relative Position Measurement Platform Design

分布式航天器相对位置测量平台设计

model of the celestial sphere; used by early astronomers to determine the positions of stars.

天球的模型；早期天文学家用的测定星体位置的仪器。

The scientific measurement of the positions and motions of celestial bodies.

天体测量学天体位置及运动的科学测量

A Method for Relative Attitude Automatic Determination of Ship Blocks Based on Multi-antenna System

基于多天线的船体总段相对位姿测量方法

Relative position-and-attitude self-measuring for spacecrafts docking

航天器对接相对位置姿态自主测量方法研究

Monocular Vision-Based Relative Position and Attitude Measurement Algorithm for Non-Cooperative Spacecrafts

基于单目视觉的非合作航天器相对位置和姿态测量算法

The velocity of a body, like its position, can be specified only relative to some other body.

物体的速度像物体的位置一样，只有相对于另一物体才能确定。

the branch of astronomy that deals with the measurement of the position and motion of celestial bodies.

天文学中有关天体位置与运动的测量的分支。

Dynamic relative positioning method based on the accuracy range information between airbornes

基于飞行体间精确测距的动态相对定位方法

Quantitative Measurement of Flow Velocity with a Phantom by 2D PC-MRI

二维相位对比MRI在稳态流体模型的定量测量

Visual position measurements in astrometry are most affected.

天体测量学中视位置的测量受影响最大。

celestial fix

天体导航法测定船位

At present, Astrometrists can not pay no attention to relativity any longer.

今天,天体测量学家再也不能对相对论问题置之不理了。

a relative position or degree of value in a graded group.

在分等级的团体中的相对位置。