求翻译：研究了固体铁系超强酸催化合成香兰素1，2-丙二醇缩醛的工艺。以香兰素和1，2-丙二醇为原料，自制铁系固体超强酸为催化剂，环己烷为带水剂，合成了香兰素1，2-丙二醇缩醛。考察了醛醇摩尔配比、反应时间、催化剂用量、催化剂重复使用、带水剂等因素对产物收率的影响。结果表明：铁系固体超强酸具有良好的催化活性，且催化剂可以重复使用3次以上，催化效果无明显变化。最佳工艺条件为：香兰素用量为0.05mol,n（香兰素）：n（1，2丙二醇）=1：2.3，带水剂环己烷（20mL），催化剂用量为反应物总质量的0.50%，回流反应时间2 h，产品收率达85%以上。是什么意思？

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A study of solid iron-strong acidic catalytic synthetic fragrance, 1, 2 - 2 C Isopropyl Alcohol acetal process. In Hong Kong, and 1, and 2-c 2 for raw materials, and tasting homemade iron is strongly acidic solid out to act as a catalyst to ring for trioxane fuel with water, and the combined with fr

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