backing vacuum
查询英语单词中文释义、音标、发音和例句。
backing vacuum
英
[backing vacuum]
美
[backing vacuum]
中文释义
[化] 前级真空
单词分析
单词结构:
backing vacuum
字母数:14
记忆提示
🎯 重点记忆:
- 单词拼写:backing vacuum
- 核心含义:[化] 前级真空
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更新时间:2026-08-31 07:07:39