The synthetic conditions of a and B were determined, and the various factors affecting the castmoulding were discussed.
确定了两种组分的合成条件，并对影响浇铸成型的各种因素进行了探讨。
2
PVC is easy to process by extrusion, injection molding, calendering, blow molding, compressing, castmoulding and thermal molding, etc.
产品易于成型加工，可以采用挤出，注塑，压延，吹塑，压制，铸塑及热成型等多种成型方法进行加工。
3
One crucial advantage of cast polyurethane is that it can be bonded effectively with metals, composites or plastics during or after the moulding process.