operation certificat
查询英语单词中文释义、音标、发音和例句。
operation certificate of machinery
英
[operation certificate of machinery]
美
[operation certificate of machinery]
中文释义
机械操作证
单词分析
单词结构:
operation certificate of machinery
字母数:34
记忆提示
🎯 重点记忆:
- 单词拼写:operation certificate of machinery
- 核心含义:机械操作证
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更新时间:2026-09-20 09:08:34