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positive displacement vacuum pump
positive displacement vacuum pump
英
[positive displacement vacuum pump]
美
[positive displacement vacuum pump]
中文释义
变容真空泵
单词分析
单词结构:
positive displacement vacuum pump
字母数:33
记忆提示
🎯 重点记忆:
单词拼写:positive displacement vacuum pump
核心含义:变容真空泵
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更新时间:2026-01-21 07:21:27