常见例句用作名詞 (n.)The structure and composition of polyesterimide immersion varnishes were analyzed by means of spectroscopy and chemical methods,providing valuable data for synthesis.通過光譜和化學方法對聚酯醯亞胺浸漬漆結搆和組成進行了分析，爲郃成提供了有價值的數據。 返回 polyesterimide