常见例句用作名词 (n.)The structure and composition of polyesterimide immersion varnishes were analyzed by means of spectroscopy and chemical methods,providing valuable data for synthesis.通过光谱和化学方法对聚酯酰亚胺浸渍漆结构和组成进行了分析，为合成提供了有价值的数据。 返回 polyesterimide