youdao

Any distress vessel in the all sea areas may use DSC device working on different frequency to send distress alert.

在各海区的遇险船舶均可使用不同频率的DSC设备进行遇险报警。

youdao

Any distress vessel in the all sea areas may use DSC device working on different frequency to send distress alert.

在各海区的遇险船舶均可使用不同频率的DSC设备进行遇险报警。

youdao