Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/bab9b2ef414c1b334350a7aadf7e5d55.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 sound ranging英英字典_sound ranging剑桥英语解释_sound ranging柯林斯英文解释_沉淀汉英词典
1. N the determination of the location of a source of sound waves by measuring the time lapse between their transmission and their reception at microphones situated at three or more known positions 声波测距法