background activity
查询英语单词中文释义、音标、发音和例句。
background activity level
英
[background activity level]
美
[background activity level]
中文释义
底[放射性]活度水平
单词分析
单词结构:
background activity level
字母数:25
记忆提示
🎯 重点记忆:
- 单词拼写:background activity level
- 核心含义:底[放射性]活度水平
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更新时间:2026-08-29 05:58:16