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pH is a measure of acidity or alkalinity. PH, ph, pH, and Ph may also refer to: ==Sciences== * Acidity the numerical value indicating acidity * PH (complexity), the union of all complexity classes in the polynomial hierarchy in computational complexity theory * Phenyl group, either -Ph or Φ, highly-stable and aromatic hydrocarbon unit found in many organic compounds * phot, or ph, a measurement of illuminance (photometry) * pico- henry (unit), an SI Unit of electrical inductance * Pleckstrin homology domain, a part of many proteins which bind phosphoinositides with high affinity * Pulmonary hypertension, a medical condition * Soil pH is a measure of soil acidity or soil alkalinity 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「PH (disambiguation)」の詳細全文を読む スポンサード リンク
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