Injection molding is an important method of polymer process.
注射成型是高分子材料成型加工的重要方法。
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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