| 单词 |
overbleach |
| 释义 |
overˈbleach, v.
[over- 27.]
trans. To bleach excessively so that the material bleached deteriorates. Hence overˈbleached ppl. a., overˈbleaching vbl. n.
1921S. H. Higgins Bleaching xiii. 111 The ‘copper value’ standardised by Schwalbe is the most definite measure available for the diagnosis of chemical modification in celluloses, particularly by overbleaching. Ibid., The copper value of strongly overbleached cottons may rise as high as 16. 1946L. E. Wise Wood Chem. vi. 150 In pulp manufacture, overbleaching gives a paper with lowered strength, due to oxycellulose formation. 1950B. E. Hartsuch Introd. Textile Chem. vii. 188 If the specific viscosity of the cotton is greater than 1, the cloth has been overbleached. 1963A. J. Hall Textile Sci. ii. 25 Overbleached cotton containing oxycellulose resists dyeing with direct cotton dyes, so that if this overbleaching is not even, the bleached yarn or fabric is liable to dye unevenly. 1972L. Palladino Princ. & Pract. Hairdressing xi. 153/1 Overbleached hair when wet is almost like chewing gum. |
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