| 单词 | proto-nitrate | 
| 释义 | > as lemmasproto-nitrate   proto-nitrate  n.  Brit. , U.S. now historical ΚΠ 1823    Lancet 16 Nov. 232/2  				It is precipitated by protonitrate of mercury. 1908    Philos. Trans. 		(Royal Soc.)	 A. 207 395  				Protonitrate of mercury..was made from mercury and nitric acid. 1953    A. G. E. Pearse Histochem. i. 4  				Payen (1843) had already demonstrated nitrogenous substances in vegetable tissues with mercury proto-nitrate. < as lemmas | 
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