observer's meridian

测量学专业词汇英语翻译（二） ... 测站造标 construction of station and signal 测站子牛圈 observer's meridian 测针 chain pin ...

航海及海运专业术语O(1) ... observer 观测员 observer's meridian 测者子午圈 observer's meridian 测者子午圈观测者子午线 ...

航海及海... ... observer's meridian 测者子午圈 observer's meridian 测者子午圈观测者子午线 observer-target line 观察目标线 ...