构型保持（retention of configuration）反应涉及一个不对称碳原子上的一根键的变化，新键在旧键 构型保持 断裂的方向形成。
双语例句
1
Playsets may include elements adapted to urge a portion of the pop-up structure toward the erect configuration or one or more playset- accessory retention chambers.
玩具组可包括适于将弹出结构的一部分推向直 立形态的元件或者一个或多个玩具组附件固定室。
2
Gradient elution: the configurationof the equipment employed may significantly alter the resolution, retention time and relative retentions described in the method.