In the second part, rare earth polymer complex photochromic materials were synthesized and applied.
本论文第二部分对稀土配合物光致变色材料进行了合成及应用研究。
BPA is commonly used in food and drink packaging, where the molecule is usually locked in as part of a complex polymer.
双酚a一般用于食品和饮料包装，其分子作为复合聚合物的一部分，通常是固定的。
Microbiogen USES dilute sulphuric acid to break down another component of the plant cell wall: a complex polymer called hemicellulose, which binds cellulose microfibres together.
Mirobiogen使用稀硫酸打破了植物细胞壁的另一个组成部分：称为半纤维素的复杂复合物，它将纤维素捆绑在一起。
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