principal normal sec
查询英语单词中文释义、音标、发音和例句。
principal normal section
英
[principal normal section]
美
[principal normal section]
中文释义
主正截面
单词分析
单词结构:
principal normal section
字母数:24
记忆提示
🎯 重点记忆:
- 单词拼写:principal normal section
- 核心含义:主正截面
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更新时间:2026-08-29 21:27:56