sounder
柯林斯词典
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
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
返回 sounder