random variation短语¹⁴⁴⁹⁷²⁺² 基本例句 随机变化,无规则变化 Random variation of wind direction and wind speed influence is also included. 该模型还考虑了风向、气温的影响。 boshuo Due to the scattered properties of composite materials, the random variation of loads, the reliability of composite laminate structures must be considered in design process. 由于复合材料的材料性能分散性大,结构所承受的载荷也具有不确定性,因此在设计中需要考虑复合材料层合结构的可靠性。 cnki