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bifocal tube
bifocal tube
英
[bifocal tube]
美
[bifocal tube]
中文释义
双焦点管
单词分析
单词结构:
bifocal tube
字母数:12
记忆提示
🎯 重点记忆:
单词拼写:bifocal tube
核心含义:双焦点管
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更新时间:2026-01-19 14:30:40