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backing welding
backing welding
英
[backing welding]
美
[backing welding]
中文释义
打底焊
单词分析
单词结构:
backing welding
字母数:15
记忆提示
🎯 重点记忆:
单词拼写:backing welding
核心含义:打底焊
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更新时间:2026-01-30 09:49:39