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weld back-up
weld back-up
英
[weld back-up]
美
[weld back-up]
中文释义
焊缝背垫
单词分析
单词结构:
weld back-up
字母数:12
记忆提示
🎯 重点记忆:
单词拼写:weld back-up
核心含义:焊缝背垫
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更新时间:2026-03-19 01:47:55