a polystyrene box的用法和样例：
- A polystyrene(PS)/poly(butyl acrylate)(PBA)composite emulsion was produced by seed emulsion polymerization of styrene .
- On the rare occasions that I have flown with a bottle in a suitcase, I pack it in a polystyrene tube and swathe the whole thing with Sellotape.
- The interface layer was fabricated by coating a polystyrene film on the pore surface of porous aluminum using a sol-gel technology.
- The dinghies and their equipment have been packed in polystyrene boxes in ten separate wooden crates marked 1-10, and bearing our brand.