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time and frequency standard
time and frequency standard
英
[time and frequency standard]
美
[time and frequency standard]
中文释义
时间和频率标准
单词分析
单词结构:
time and frequency standard
字母数:27
记忆提示
🎯 重点记忆:
单词拼写:time and frequency standard
核心含义:时间和频率标准
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更新时间:2026-03-21 15:45:21