英语词汇“ph standard”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	ph standard
释义	pH standard pH standard [‚pē′āch ¦stan·dərd] (analytical chemistry) Five standard laboratory solutions available from the U. S. National Bureau of Standards, each solution having a known pH value; the standards cover pH ranges from 3.557 to 8.833. Abbreviated pH(S).
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pH standard