常见例句Besides polyether blend, the cooperativity of polymeric MDI and blowing agent is a key factor to PURF's manufacture. 除组合聚醚的因素外，发泡剂与聚合MDI的配伍性和反应的协同性是影响硬质聚氨酯泡沫塑料制造的重要因素。 返回 PURF