• 1. per mil: 千分比 | 每千
• 2. volts per mil: 伏密耳
• 3. VPM volts per mil: 伏

更多释义

• 1.PWB samples were subjected to the solder float test per MIL-P-55110 and then the PTHs were cross-sectioned.
  印制板试样必须经过MIL—P—55110标准浮焊试验，然后对金属化孔进行剖视。
  dict.yoduao.com

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