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heaterless tube
heaterless tube
英
[heaterless tube]
美
[heaterless tube]
中文释义
直热式电子管
单词分析
单词结构:
heaterless tube
字母数:15
记忆提示
🎯 重点记忆:
单词拼写:heaterless tube
核心含义:直热式电子管
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更新时间:2026-01-19 02:03:03