They represent a large number of classes of substances of which the most important are: (1) Hydrocarbons, such as pinene in oil of turpentine, camphene in citronella oil, limonene in lemon and orange-peel oils, caryophyllene in clove oil and cumene in oil of thyme; (2) ketones, such as camphor from
cumene与发音含义,同义词,反义词,翻译,刑和更多的