英语语法分析

PS (POLYSTYRENE) is often seen in our daily life.

聚苯乙烯在我们的日常生活中随处可见。

After that, the material is heated, to melt the polystyrene.

前面的几步完成后，对材料加热以融化聚苯乙烯。

The rotor is formed from two linked polystyrene beads each 0.3 micrometres across.

转子是用两个跨度为0.3微米的聚苯乙烯玻璃珠子连接而成。