declination of the needle

航海及海运专业英语词... ... declination needle 磁偏指针 declination of the needle 磁针倾角 declination of zenith 天顶赤纬 ...

... "磁偏角"," declination of compass" "磁针偏角"," declination of the needle" "磁偏分度尺"," declination protractor" ...

测量学专业词汇英语翻译（三） ... 磁鍼 magnetic needle 磁鍼偏角 declination of the needle 磁鍼倾角 dip of needle ...