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首页 - 英汉词典 - P字开头的单词或词组 - primary standard

英语解释

primary standard

汉语翻译

【化】基本标准物质

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primary standard substance primary standard fuel blue primary world export prices indexes of primary commodities and manufactured goods unassignable primary input toxin primary three primary colours three primary colors subtractive primary run-off primary rechargeable primary cell primary-tertiary alcohol

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