... Datum reference 定位基准 ; 参考基准 ; 基准参考 datum reference frames 基准参考框架 ; 基准参考框架基准参考框 Datum Reference Frame 基准参考框 ; 基准系 ...
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基准系统 baseline system ; benchmark system ; Benchmarking system ; baseline scenario
时间基准系统 time reference system
姿态航向基准系统 AHRS ; attitude heading reference system
大气数据惯性基准系统 ADIRS ; air data inertial reference system
惯性基准系统 IRS ; inertial reference system
炮口基准系统 MRS
时钟基准系统 Clock Standar
陀螺基准系统 [航] [水运] gyro reference system ; gyroscope reference system
基准系应用 DRF Application
地理和投影坐标系都包含对地球形状的假设(一个略扁的球体)；这称为大地基准点。
Both geographic and projected coordinate systems include a definition of the assumed shape of the earth (a flattened sphere); this is called the geodetic datum.
起始：也叫做公共起始，有时也叫做基准模型，这是并行开发模型可以追溯的宗系关系中最近的一个起始。
Ancestor: Also called the common ancestor and sometimes called the base model, which is the closest or nearest ancestor from which the lineage of the parallel changed models can be traced.
根据特征元素树创建了基准面和基准坐标系，使我们很方便的在需要参照基准的时候来选取它。
According to feather element tree, the base level and base coordinate system are created, then we can choose them when we need them at any time.
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