另外，所述感光性单体含二个以上的烯键式双键，可提高光敏感性并降低紫外线曝光量。
Additionally, the light-sensitive monomer contains more than two olefinic bonds, so that the light susceptibility is improved and the UV exposure is reduced.
在蓖麻油的主要成分脂肪酸中，除含有一个烯键外，羟基的存在使该植物油具育许多独特的性质。
Tha presence of a hydroxyl group, in addition to an olefinic linkage, in the predominating fatty acid of castor oil, gives this vegetable oll many unique and interesting properties.
从蓖麻油分子中羟基、酯基、烯键等官能团的化学反应出发，对种类繁多的蓖麻油化学品加工技术进行综述归类。
Many kinds of chemicals were made from castor oil. There production techniques were summarized and classified according to the reactions of hydroxy, ester group and olefinic bond.
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