ctn
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ctn
英
[ctn]
美
[ctn]
中文释义
abbr. [数]余切(cotangent)
单词分析
单词结构:
ctn
字母数:3
记忆提示
🎯 重点记忆:
- 单词拼写:ctn
- 核心含义:abbr. [数]余切(cotangent)
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更新时间:2026-09-01 01:41:13