The injection molding technique, after-treating technique and ultrasonic welding technique of PPS products are described in detail.

重点阐述了PP S制品的注塑工艺、后处理工艺以及超声波焊接工艺。

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A variotherm injection molding technique with steam heating and coolant cooling was studied and its molding process was also designed.

研究了一种利用蒸汽加热和冷却水冷却的变模温注塑工艺，制定了其工艺流程。

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In the light of improving injection molding technique and mold making technique, the measures for improving the quality of plastic optical elements are given.

从改进注射成型技术和模具制造技术的角度介绍了提高塑料光学零件的质量所采取的措施。

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His chips, the size of a half-dollar or smaller, are made with two layers of rubber, relying on a technique similar to injection molding used to make toys.

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