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。
Polymer is a very expensive material and the injection process is a long complex process.
聚合物是一种昂贵的化学产品，并且其注入是一个漫长而复杂的过程。
Polymer is a very expensive material and the injection process is a long complex process.
聚合物是一种昂贵的化学产品，并且其注入是一个漫长而复杂的过程。
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