例句與造句

1. At the same time he pointed out the existence of relationship between optical activity and the presence of an asymmetrical carbon atom.
2. Doripenem's chemical configuration has 6 asymmetrical carbon atoms ( 6 stereocentres ) and is most commonly supplied as one pure isomer.
3. The concept of the " asymmetrical carbon atom ", dealt with in this publication, supplied an explanation of the occurrence of numerous isomers, inexplicable by means of the then current structural formulae.
4. In 1890, by epimerization between stereochemical and isomeric nature of the sugars, and between 1891 and 1894 he established the stereochemical configuration of all the known sugars and exactly foretold the possible isomers, by an ingenious application of the theory of the asymmetrical carbon atom of Van't Hoff and Le Bel, published in 1874.
5. It's difficult to find asymmetrical carbon in a sentence. 用asymmetrical carbon造句挺難的