It exhibits improved strength, stiffness and creep resistance compare to standard blow molding grades.
它具有更好的强度，刚度和抗蠕变性比较标准的吹塑等级。
2
The paper introduces the stiffness testing method used in automotive circle and the test method of the second class stiffness leaf spring in IVECO automotive leaf spring standard.
介绍了行业中的刚度测试方法和IVECO汽车板簧标准中的二级刚度的板簧刚度测试方法。
3
Based on site measuring and laboratory testing, these parameters 'mean and standard deviation are calculated, and the linear stiffness for the system of formwork supports is measured.