Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/3afbb370509d358eccc7bec2a51f2775.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 echo sounding是什么意思，echo sounding的翻译，echo sounding音标、读音、用法和例句_甲百汇小鸡词典
It also carries out surveys through two specially-designed vessels which are fitted with the latest type of equipment including multi-beam echo sounders. 该部配备两艘经过特别设计的测量船，船上装有最新类型的设备，包括多波束回声测深仪。