?三位度数罗盘

... needle compass card 多磁针罗经标度盘 three figure compass card 三位度数罗盘 multineedle compass card 多磁针罗经标度盘 ...

?三位度数罗经盘

三位度数罗经盘 three figure compass card 罗经 [航海学] (罗盘) compass 电罗经 gyrocompass;磁罗经 magnetic compass; 航海罗经 mariner's compass; 罗经座 pyx; 罗经...