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	ringed ringed barrel ringed seal ringed space ringed subspace ringed tracheid ring (ed) vessel ring emitter ring enlargement ringent ringer ringer box ringer bracing ringer oscillator ring-expansion polymerization ring feeder ring-fence ring filament ring filling ring-finger ring fire ring fluorination ring forging ring form ring formation

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