Single phase mullite were prepared by using mechanochemical method with kaolinite and alumium hydroxide as starting materials. 以高岭土和氢氧化铝为原料，采用机械力化学法制备出了单向莫来石。
The dynamic stress factor from two lower accelerations of horizontal and vertical might cause more serious failure than that from higher single acceleration. 较低峰值的双向地震动产生的应力强度因子可能大于较高峰值的单向地震动所产生的应力强度应子。
