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back-up ring
back-up ring
英
[back-up ring]
美
[back-up ring]
中文释义
支承环
单词分析
单词结构:
back-up ring
字母数:12
记忆提示
🎯 重点记忆:
单词拼写:back-up ring
核心含义:支承环
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更新时间:2026-03-11 00:24:43