certified reference
查询英语单词中文释义、音标、发音和例句。
certified reference material
英
[certified reference material]
美
[certified reference material]
中文释义
[化] 有证标准物质
单词分析
单词结构:
certified reference material
字母数:28
记忆提示
🎯 重点记忆:
- 单词拼写:certified reference material
- 核心含义:[化] 有证标准物质
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更新时间:2026-08-28 03:46:59