frequency primary st
查询英语单词中文释义、音标、发音和例句。
frequency primary standard
英
[frequency primary standard]
美
[frequency primary standard]
中文释义
频率原级标准
单词分析
单词结构:
frequency primary standard
字母数:26
记忆提示
🎯 重点记忆:
- 单词拼写:frequency primary standard
- 核心含义:频率原级标准
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更新时间:2026-08-31 00:07:42