ppm有可能指的是:

  • Parts per million,百万分率
  • Pages per minute(页每分钟),每分钟图形页数,一个衡量打印机或其他印刷机器速度的单位,每一分钟印几张。
  • Private placement memorandum,基金购买说明书。
  • Project Portfolio Management,项目组合管理。
  • 估计不良率(PPM compression algorithm),衡量制程能力。
  • Pulse-position modulation,脉冲相位调变/脉冲位置调变。
  • 一种图片格式,常见类型为24位RGB二进制保存,参见PBM格式

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