| 单词 | sudan 2 |
| 释义 | > as lemmasSudan 2 b. In names of particular dyes, as Sudan I, Sudan II, Sudan III, Sudan IV (also Sudan 1, Sudan 2, etc.); Sudan black (also Sudan black B), Sudan red, etc. ΚΠ 1893 Jrnl. Soc. Dyers & Colourists 9 87/4 (table) Sudan II, and III... Sudan brown. 1894 A. G. Green tr. G. Schultz & P. Julius Syst. Surv. Org. Colouring Matters 66 (table) Sudan I..Benzene-azo-β-naphthol. C16H12N2O. 1939 T. L. Green Pract. Animal Biol. iv. 258 Repeat as above, but dip the smear into an aqueous solution of Sudan 3 which will stain the fat globules red. 1956 Nature 24 Mar. 586/1 This polybase..has the advantage of being stained by naphthalene black 12B as well as by sudan black. 1966 C. R. Leeson & T. S. Leeson Histol. i. 16/1 Fat can be detected in sections which have not been exposed to fat solvents by stains such as Sudan III, Sudan IV, and Sudan black B. 2003 Guardian 1 Aug. i. 8/5 Fresh chilli is not affected and checks are now being made on imports to ensure that products test negative for Sudan 1 before being allowed into Britain. < as lemmas |
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