protective envelope
查询英语单词中文释义、音标、发音和例句。
protective envelope
英
[protective envelope]
美
[protective envelope]
中文释义
保护层[套,膜,外壳]
单词分析
单词结构:
protective envelope
字母数:19
记忆提示
🎯 重点记忆:
- 单词拼写:protective envelope
- 核心含义:保护层[套,膜,外壳]
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更新时间:2026-08-30 15:41:48