| 单词 | molecular weight |
| 释义 | > as lemmasmolecular weight molecular weight n. Physical Chemistry the relative molecular mass of a molecule, equal to the sum of the relative atomic masses (atomic weights) of the constituent atoms. ΘΚΠ the world > matter > chemistry > atomic chemistry > [noun] > molecules > molecular weight molecular weight1860 MW1939 1860 Proc. Royal Soc. 1859–60 10 586 It was of some interest to obtain additional experimental evidence for the molecular weight of azobenzol. 1904 C. S. Palmer & R. A. Lehfeldt tr. W. Nernst Theoret. Chem. (ed. 2) ii. iv. 275 There are isomeric substances having the same per cent composition and different molecular weights, as acetylene C2H2, and benzene C6H6. 1933 A. W. Barton Text Bk. Heat vii. 149 This method is designed to give a rapid and simple determination of the vapour density of a substance to 5 per cent. with a view to estimating its molecular weight. 1950 Sci. News 15 88 Blue hæmocyanin... This molecule is the largest of any known substance, having a molecular weight of several millions. 1959 N. Feather Introd. Physics Mass, Length & Time xv. 283 Equation (126) is now the equation of state for a mass m of an ideal gas of molecular weight, or, strictly, of molar mass, M. 1994 Sci. Amer. Sept. 42/3 An unknown protein of high molecular weight. < as lemmas |
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