echo-sounder

英['ekəʊs'aʊndər] 美['ekəʊs'aʊndər]
  • 音响测深机
  • agent n.代理人;代理商;药剂;特工人员
  • contrast n.对比;差别;对照物v.对比;成对照n.[计算机]反差
  • echo vi.发出回声;回响vt.重复;模仿;附和n.回声;重复;共鸣Echo.n.[希神]山林女神(失恋于那喀索斯;其哀声留于山间成为回声)
名词 echo sounder:
  1. a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return