Applejack is a classic American brandy distilled from apples.

这是一种从苹果中而来的美国白兰地。

The sediments of applejack were analysed in this article, and the main composition was determined to be the high-level copper aliphatate, the other was calcium sulfate.

分析了苹果酒中的沉淀，确定主要成分为铜的高级脂肪酸盐，部分为硫酸钙。