单词	optically active
释义	optically active adjective : capable of rotating the plane of vibration of polarized light to the right or left —used of compounds, molecules, or atoms Word History First Known Use 1858, in the meaning defined above Medical Definition optically active adjective : capable of rotating the plane of vibration of polarized light to the right or left : either dextrorotatory or levorotatory —used of compounds, molecules, or atoms
随便看	national day national debt National Democratic national economy national emergency national ensign national flag national flag blue national forest national guard national guards national guardsman national holiday national income National Insurance national interest national meridian national mission national monument national park national product National Republican national road national salute national school

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