A.1mm B.2~3mm C.3~4mm D.5~6mm E.7mm
A.塑料調(diào)和時(shí)單體過多 B.塑料調(diào)和時(shí)單體過少 C.填塞塑料過早 D.填塞塑料過晚 E.熱處理升溫過快