sounder

柯林斯词典

sounder /ˈsaʊndə/

• 1. N an electromagnetic device formerly used in telegraphy to convert electric signals sent over wires into audible sounds (曾用在電信技術中的)音響器; 以轉化電信號竝把它送進導線變爲聽得見的聲音




sounder /ˈsaʊndə/

• N

• 1. N a person or device that measures the depth of water, etc 測量水深的人; 測量水深的儀器

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