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keystone piston ring
keystone piston ring
英
[keystone piston ring]
美
[keystone piston ring]
中文释义
梯形断面活塞环
单词分析
单词结构:
keystone piston ring
字母数:20
记忆提示
🎯 重点记忆:
单词拼写:keystone piston ring
核心含义:梯形断面活塞环
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更新时间:2026-01-31 11:32:56