| 单词 | chemical marker |
| 释义 | > as lemmaschemical marker chemical marker n. a chemical substance used as a marker (marker n. 17b); a taggant. In quot. 1919 the marker used is in the formulation of the indelible trace of a writing implement. ΚΠ 1919 U.S. Patent 1,357,594 1 New and useful Improvements in Chemical Markers... This invention relates in general to a marking device in the nature of a pencil or crayon. 1964 Jrnl Cell Biol. 22 318/2 Either cytochrome oxidase or succinic acid dehydrogenase should be a reliable chemical marker for the mitochondrial fraction of liver tissue. 1996 Economist 3 Aug. 42/2 A study of the effectiveness of adding chemical markers, or ‘taggants’, to explosives, to make them easier to trace. < as lemmas |
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