问题: 求达人帮忙翻译(关于增塑剂）4
It is obvious from the literature that a number of companies were actively engaged in research on processing aids for rigid PVC.Taking very liberal interpretation of additives that could be considered processing aids or polymeric flow improvers,a rather broad number list of polymer compositions has been compiled from the product literature[5]and is presented in the following list:
解答:
多家公司在以下名单有效地参与对加工助剂的研究的可能被认为加工助剂或聚合物流程改良者添加剂的刚性PVC.Taking非常宽宏解释，聚合物构成一张相当宽广的数字名单从产品文学[5]被编写了和出席：
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