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beam valve
beam valve
英
[beam valve]
美
[beam valve]
中文释义
= beam tetrode
单词分析
单词结构:
beam valve
字母数:10
记忆提示
🎯 重点记忆:
单词拼写:beam valve
核心含义:= beam tetrode
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更新时间:2026-04-13 11:55:34