英语词汇“ppm”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ppm
释义	> as lemmas ppm ppm n. parts per million. ΚΠ 1905 Bot. Gaz. 40 185 Culture 6, containing 30,000 p.p.m. manure in the Takoma soil, shows a discrepancy which was not found in Series I. 1964 Punch 25 Nov. 806/2 A peregrine found dead on Lundy Island contained 78 ppm of total chlorinated hydrocarbon in its liver. 1989 C. Caufield Multiple Exposures (1990) xix. 194 Igneous rocks have only about 0.03 parts per million (ppm) of uranium; granite has 4 ppm; bituminous shale has up to 80 ppm. extracted from Pn. < as lemmas
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英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。

> as lemmas