A、the weather is always terrible
B、the condition there is complicated
C、the signals are too strong
D、their SES may receive the signals from unwanted satellite
A、the weather is always terrible
B、the condition there is complicated
C、the signals are too strong
D、their SES may receive the signals from unwanted satellite
时间:2021-12-31 22:57 关键词: GMDSS
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