non-directional echo sounding

英 [non-directional echo sounding]
美 [non-directional echo sounding]

中文释义

非定向回声测深法

单词分析

单词结构：

non-directional echo sounding

字母数：29

记忆提示

🎯 重点记忆：

  • 单词拼写：non-directional echo sounding
  • 核心含义：非定向回声测深法

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更新时间：2026-01-31 08:00:30