McLeod gauge
(baseball) A split-finger fastball.
plural of ironwood
(vulgar) Occurring after a fuck; occurring after sex.
(physics) a device, rather like a manometer, used to measure low pressures close to that of a vacuum, by using an application of Boyle's law
研究室の技術者は、ボイルの法則を応用して真空に近いごく低い圧力を測定する管状の真空計（マクレオド真空計）を慎重に較正してからチャンバーを排気し、正確な真空値を得た。
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DiQt
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