turning couple meaning in Chinese

扭力偶
扭转力偶
倾覆力偶
转动力偶

Now , simplified calculating methods of vertical frame and horizontal framed bent for plate structure are mostly used in this structure design . for the complex distribution of quality and rigidity of this structure , the calculating method of space turning coupled pair should be considered as a complemental checking calculation for this kind of irregular structure
该类结构设计目前大多采用纵向框架、横向框排架的平面结构简化计算方法,由于该类结构质量和刚度分布复杂,对于此类不规则结构尚应采用考虑空间扭转耦联的计算方法进行补充验算。