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.
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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