ppm
- abbr. 百萬(wàn)分率，百萬(wàn)分之…（parts per million）
暢通詞匯
英文詞源
- ppm
- abbreviation of parts per million, attested by 1913.
雙語(yǔ)例句
- 1. The term parts per million ( ppm ) was widely used but frequently led to misinterpretation.
- 廣泛使用百分之幾 ( ppm ) 表示結(jié)果,但常常引起誤解.
來(lái)自辭典例句
- 2. Note: PPM means part per million usually a measure of quality.
- 注: PPM是百萬(wàn)分之一件的縮寫(xiě)通常是質(zhì)量的一種指標(biāo).
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- 3. Objective : To study implement effect of PPM - tuberculosis control project in city.
- 目的: 探討在城區(qū)實(shí)施PPM-DOTS項(xiàng)目的效果情況.
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- 4. This article presents a class for using PPM to compress a file.
- 本文介紹了使用PPM的壓縮文件一類(lèi).
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- 5. Probabilistic Packet Marking ( PPM ) is an efficient and practical scheme.
- 概率包標(biāo)記 ( PPM ) 是一種比較有效且實(shí)用的解決方法.
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