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back-up washer
back-up washer
英
[back-up washer]
美
[back-up washer]
中文释义
支撑垫圈
单词分析
单词结构:
back-up washer
字母数:14
记忆提示
🎯 重点记忆:
单词拼写:back-up washer
核心含义:支撑垫圈
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更新时间:2026-01-30 14:02:31