astrolabe例句
Mariners were also able to fix their latitude by using an instrument called
astrolabe.
海员们还可使用星盘这种仪器确定纬度。
Mariners were also able to fix their latitude , by using an instrument called an
astrolabe.
海员们还可使用星盘这种仪器确定纬度.
Other early instruments included the sextant and the
astrolabe.
另外的早期仪器还有六分仪和星盘.