| 释义 |
unˈsaturated, ppl. a.
(un-1 8; cf. saturated ppl. a. 3 b.)
1758Reid tr. Macquer's Chym. I. 395 That portion of the Acid which remains unsaturated will dissolve the Mercury. 1791Phil. Trans. LXXXI. 219 Any surplus of..air would only have remained unsaturated. 1832Nat. Philos., Electr. ii. §53 (L.U.K.), Its unsaturated matter would have exerted an attractive force on the fluid. 1866Notices Proc. R. Inst. Gt. Brit. IV. 417 The two nitrogen arms which are left exposed sufficiently indicate that two attraction units remain unsaturated. 1872Phil. Mag. XLIII. 259 A radical..is a portion of a molecule, a group of atoms, the affinities of which do not wholly saturate one another, the radical being uni-, bi-, tri-, quadri-, &c. valent, according as 1, 2, 3, 4,..affinities are left unsaturated. 1879O. N. Rood Chromatics xviii. 307 He must mainly use the pale unsaturated colours of nature. 1916Jrnl. Amer. Chem. Soc. XXXVIII. 778 It has been generally assumed that what is known as a bivalent element must be tied by two bonds to another element or elements, or remain with an ‘unsaturated valence’. 1951I. L. Finar Org. Chem. iv. 67 The acetylenes are unsaturated hydrocarbons that contain one triple bond. 1982J. E. Fernandez Org. Chem. v. 89 The alkenes are unsaturated: that is they contain fewer hydrogen atoms than the alkanes. |