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natural radiation background
natural radiation background
英
[natural radiation background]
美
[natural radiation background]
中文释义
un. 天然放射性本底
单词分析
单词结构:
natural radiation background
字母数:28
记忆提示
🎯 重点记忆:
单词拼写:natural radiation background
核心含义:un. 天然放射性本底
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更新时间:2026-03-27 22:44:06