| 释义 |
▪ I. gelation1|dʒɪˈleɪʃən|
[ad. L. gelātiōn-em, f. gelāre to freeze.]
Solidification by cold, freezing.
1854Mayne Expos. Lex., Gelatio..gelation. 1871tr. Schellen's Spectr. Anal. lxvi. 369 Complete gelation and torpidity. 1875Ruskin Deucalion (1879) I. 44, I do not doubt but that wonderful phenomena of congelation, regelation, degelation and gelation pure without preposition, take place whenever a schoolboy makes a snowball.
▪ II. gelation2|dʒɛˈleɪʃən|
[f. gel n. + -ation.]
The process of becoming a gel.
1915W. W. Taylor Chem. Colloids 11 There seems no escape from the adoption of the following terms:—gel, to gelate, gelation, sol, to solate, solation. 1950Thorpe's Dict. Appl. Chem. (ed. 4) X. 56/2 Gelation is not necessarily due to the formation of very large molecules. Ibid., Gelation occurs only when there is the possibility of unlimited growth in three dimensions. 1954Electronic Engin. XXVI. 141 If gelation takes place before maximum expansion has been reached, the product will be much denser than expected. |