A.0.2mm B.0.5mm C.0.8mm D.1.2mm E.1.5mm
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.填塞塑料過遲 E.熱處理升溫過快
A.1/2 B.1/3 C.1/4 D.3/4 E.2/3