(甚高频数字选择性呼叫)作为近海海域的一种主要报警方式，对于船舶航行安全有着很重要的作用。
VHP DSC (very High Frequency Digital Selective Call), as a main means of alarm, is very important for the vessels to navigate safely.
(甚高频数字选择性呼叫)作为近海海域的一种主要报警方式，对于船舶航行安全有着很重要的作用。
VHP DSC (very High Frequency Digital Selective Call), as a main means of alarm, is very important for the vessels to navigate safely.
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