翻译
certification of a reference material
- 英 [ˌsɜ:təfɪˈkeɪʃən ɔv ə ˈrefrəns məˈtiəriəl]
- 美 [ˌsətəfɪˈkeʃən ʌv e ˈrɛfərəns məˈtɪriəl]
释义
- 标准物质的定值
- 释义
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