| 单词 | long-chain | 
| 释义 | > as lemmaslong-chain   long-chain adj. Chemistry having or consisting of a relatively large number of atoms (most typically of carbon) linked together in a line. ΘΚΠ the world > matter > chemistry > chemical structure or stereochemistry > 			[adjective]		 > of or relating to chain types long-chained1745 long-chain1898 1898    J. Wade Introd. Study Org. Chem. xii. 66  				In the case of long chain formulæ containing a number of groups, it is convenient for the sake of brevity to place one of the groups, in a square bracket. 1964    G. H. Haggis  et al.  Introd. Molecular Biol. ix. 216  				Nucleic acids are long-chain molecules, and the individual units linked together to form these chains are called nucleotides. 2006    Time 26 June 74/1  				Fish oil is the best source of two long-chain essential fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)—the omega-3 fats. < as lemmas  | 
	
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