phthalic anhydride的用法和樣例：
例句
- Technology for maleic anhydride production and the development of catalysts are described.
摘要綜述了順丁烯二酸酐生產的工藝路線和催化劑研究發展。 - Maleic anhydride is the important organic chemical material, is the third largest acid anhydride behind the phthalic anhydride and acetic anhydride.
順丁烯二酸酐，簡稱順酐或者馬來酐，是重要的有機化工原料，是僅次於苯酐和醋酐的第三大酸酐。
