因此，多模多频GNSS接收机的研究具有重要的意义。

As a result, researching for multi-mode multi-frequency GNSS receiver is of great significance.

youdao

因此，多模多频GNSS接收机的研究具有重要的意义。

As a result, researching for multi-mode multi-frequency GNSS receiver is of great significance.

youdao