椅式构象是指饱和六元环化合物的邻位交叉构象。例如环己烷椅式构象的透视式和纽曼投影式
六元环分别呈现微扭曲的椅式构象、严重扭曲的椅式构象及半椅式构象。
The six-membered rings exhibit slightly distorted chair, extremely distorted chair and half-chair conformation respectively.
其中六元环分别呈现微扭曲的椅式构象、严重扭曲的椅式构象及半椅式构象；
The six-membered rings exhibit slightly distorted chair, extremely distorted chair and half-chair conformation respectively, and the five-membered ring exhibits an envelope conformation.
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