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hard vacuum tube
hard vacuum tube
英
[hard vacuum tube]
美
[hard vacuum tube]
中文释义
高[度]真空管
单词分析
单词结构:
hard vacuum tube
字母数:16
记忆提示
🎯 重点记忆:
单词拼写:hard vacuum tube
核心含义:高[度]真空管
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更新时间:2026-02-06 03:00:44