permanent backing
查询英语单词中文释义、音标、发音和例句。
permanent backing
英
[permanent backing]
美
[permanent backing]
中文释义
[化] 保留垫板
单词分析
单词结构:
permanent backing
字母数:17
记忆提示
🎯 重点记忆:
- 单词拼写:permanent backing
- 核心含义:[化] 保留垫板
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更新时间:2026-09-20 13:13:14