词汇“PPM”的意思、用法、释义、翻译、读音、例句、短语、词组-国际大辞典

单词	PPM
释义	PPMPPM1.■=Parts Per Million 百万分之几, 百万分率;2.■Periodic Permanent Magnet 周期性永久磁铁;3.■Pulse Phase [Position] Modulation 脉冲相位[位置]调制;4.■Pulses Per Minute 每分钟脉冲数
随便看	down-time profile downtime ratio down to earth down tools down total (down) to the ground down to the last detail down to the wire down town downtown downtown business district downtown station down train down-train direction down turn down twister downward downward enrichment downward [footward] acceleration downward force downwardly downwardness downward price trend downward rigidity downwards

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