右旋 (yòu xuán) — (technical) right-handed rotation, dextrorotation; (chemistry) dextrorotatory isomer or substance
Définition
Technical/scientific term for clockwise rotation — e.g. of polarized light, helices, or molecular isomers. Paired with 左旋 ('left-handed, levorotatory') in chemistry and biology.
noun
(technical) right-handed rotationdextrorotation(chemistry) dextrorotatory isomer or substance
Exemples
- 右旋，。Zhè zhǒng wù zhì shì yòu xuán de, néng shǐ piān zhèn guāng xiàng yòu xuán zhuǎn.This substance is dextrorotatory; it rotates polarized light to the right.
- 右旋酐。yòu xuán Táng gān zài yī xué shàng cháng yòng zuò xuè jiāng dài yòng pǐn.Dextran is commonly used in medicine as a plasma substitute.
- DNA右旋。DNA de shuāng luó xuán jié gòu shì yòu xuán de.The double helix structure of DNA is right-handed.
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