皮米(符號 pm,英式英語:picometre、美式英語:picometer)是長度單位,1皮米相當於1米的一兆(即一萬億)分之一,即10-12米。有時在原子物理學中稱為微微米(micromicron)。
換算關係
- 1 奈米(nm) = 1 000 皮米
- 1 微米(µm) = 1 000 000 皮米
- 1 公釐(mm)= 1 000 000 000 皮米
- 1 米(m) = 1 000 000 000 000 皮米
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