早期的指南针采用了磁化指针和方位盘的组合方式，整个指南针从便携性、指示灵敏度上都有一定不足。

Since the early use of a magnetic compass and direction-pointer of the composition, the entire compass from scratch, on the instructions of a certain sensitivity of the defect.

youdao

早期的指南针采用了磁化指针和方位盘的组合方式，整个指南针从便携性、指示灵敏度上都有一定不足。

Since the early use of a magnetic compass and direction-pointer of the composition, the entire compass from scratch, on the instructions of a certain sensitivity of the defect.

youdao