本文通过试验和理论分析对橡胶的低温行为进行了研究，选出了长期冷冻性能几乎不变化的适用于供氧装备的低苯基硅橡胶。
A low-phenyl silicone rubber almost without any change of the behaviour after being frozen for a long tine is selected, which is applicable to units such as oxygen supplying de- vice.
通过静态吸附、解吸实验选出AB-8大孔树脂，通过单因素、正交实验优化了白藜芦醇、原花色素的富集、分离条件。
The macroporous adsorption resin AB-8 have been selected from 3 kinds of carriers by static adsorption and de-adsorption test.
通过脱铁与还原漂白同浴、应用正交实验，优选出的还原漂白工艺增白效果显著。
The reduced bleaching process is possessed of obvious whitening effects, through the DE iron and reduction bleaching processes in one bath and the orthogonal experiment.
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