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単位トップへ戻る |
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トップページへ戻る |
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| 3.
その他計量法で使用が認められている物象の状態の量(単位でないものも含む) |
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| 物象の状態の量 |
計量単位 |
英語 |
記号 |
SI単位による値 |
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| 圧力 |
気圧 |
atmosphere, standard
atmosphere |
atm |
1 atm = 101 325 Pa |
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| 濃度 |
質量百分率 |
mass percent, percent
by mass |
% |
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質量千分率 |
permille by mass |
‰ |
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質量百万分率 |
parts per million by
mass |
ppm |
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質量十億分率 |
parts per billion by
mass |
ppb |
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質量一兆分率 |
parts per trillion by
mass |
ppt |
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体積百分率 |
volume percent,
percent by volume |
vol%, % |
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体積千分率 |
permille by volume |
vol‰, ‰ |
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体積百万分率 |
parts per million by
volume |
volppm, ppmv |
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体積十億分率 |
parts per billion by
volume |
volppb, ppbv |
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体積一兆分率 |
parts per trillion by
volume |
volppt, pptv |
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ピーエッチ |
pH |
pH |
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| 回転速度 |
回毎分，回毎時 |
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r/min または rpm, r/h
または rph |
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| 粘度 |
ポアズ |
pois |
P |
1 P = 0.1 Pa s |
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| 動粘度 |
ストークス |
stokes |
St |
1 St = 10-4 m2/s |
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