| 单词 | elective affinity |
| 释义 | > as lemmaselective affinity a. Of physical forces and agencies: Having a tendency to operate on certain objects in preference to others. elective affinity (Chemistry): the tendency of a substance to combine with certain particular substances in preference to others; formerly elective attraction, which is still used, but chiefly in a wider sense. ΘΚΠ the world > matter > chemistry > chemical bonding > [noun] > chemical attraction attraction1664 affinity1753 elective attraction1767 vital affinity1850 1767 Philos. Trans. 1766 (Royal Soc.) 56 100 There seems..to have been a double elective attraction in the fourteenth Experiment. 1794 J. Hutton Diss. Philos. Light 50 The elective affections of this irradiated influence. 1802 W. Paley Nat. Theol. xxi. 401 It is owing to this original elective power in the air, that we can effect the separation which we wish. 1806 W. Henry Epitome Chem. (ed. 4) i. ii. 16 Tables of elective affinity have been formed. 1869 J. Tyndall Notes 9 Lect. on Light §257 Light..which has been sifted..by elective absorption. 1876 tr. P. Schützenberger On Fermentation 32 Dubrunfant has given this phenomenon the name of elective fermentation. < as lemmas |
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