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单词 superphosphate
释义

WordReference Random House Unabridged Dictionary of American English © 2024
su•per•phos•phate  (so̅o̅′pər fosfāt),USA pronunciation n. [Chem.]
  1. ChemistryAlso called acid phosphate. a mixture of calcium acid phosphate and calcium sulfate prepared by treating phosphate rock with sulfuric acid: used chiefly as a fertilizer.
  2. ChemistryAlso called triple superphosphate. a mixture prepared with phosphoric acid and containing about 45 percent of soluble phosphates, used as a fertilizer.
  • super- + phosphate 1790–1800

Collins Concise English Dictionary © HarperCollins Publishers::
superphosphate /ˌsuːpəˈfɒsfeɪt/ n
  1. a mixture of the diacid calcium salt of orthophosphoric acid Ca(H2PO4)2 with calcium sulphate and small quantities of other phosphates: used as a fertilizer
  2. a salt of phosphoric acid formed by incompletely replacing its acidic hydrogen atoms; acid phosphate; hydrogen phosphate
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