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direct heated cathode
direct heated cathode
英
[direct heated cathode]
美
[direct heated cathode]
中文释义
直热式阴极
单词分析
单词结构:
direct heated cathode
字母数:21
记忆提示
🎯 重点记忆:
单词拼写:direct heated cathode
核心含义:直热式阴极
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更新时间:2025-12-09 10:55:14