地球表面即可视为基准空间。

The earth's surface itself serves as the reference space.

youdao

选择精度高、安装稳定可靠表面为精基准。

The choice precision is high, the installment stable reliable surface is the fine datum.

youdao

选择精度高、安装稳定可靠表面为精基准。

The choice precision is high, the installment stable reliable surface is the fine datum.

youdao