单词	pyrophosphoric acid
释义	pyrophosphoric acid /ˌpʌɪrə(ʊ)fɒsˈfɒrɪk / noun [mass noun] Chemistry A glassy solid obtained by heating phosphoric acid. A tetrabasic acid; chemical formula: H4P2O7. Pyrophosphoric acid is colorless, odorless, hygroscopic and is soluble in water.
随便看	unperfectly unperfectness unperforate unperforated unperformable unperformance unperformed unperforming unperfumed unperilous unperishable unperishableness unperished unperishing rente Rentenmark renter rentering rent-free rent-gatherer rentgenoscopy rentier rentière rentless Renton

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