upper envelope
查询英语单词中文释义、音标、发音和例句。
upper envelope
英
[upper envelope]
美
[upper envelope]
中文释义
上包络
单词分析
单词结构:
upper envelope
字母数:14
记忆提示
🎯 重点记忆:
- 单词拼写:upper envelope
- 核心含义:上包络
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更新时间:2026-08-27 23:34:37