nrb meaning in English

光洋轴承有限公司
国家资源局
黄铜、铝合金等金属材料及橡胶

In the research related to compression property theory , a constant related to the vertical stiffness of nrb and lrb has been found respectively , which is defined as compression stiffness factor . the simplified calculation theory of vertical stiffness is established based on stiffness factor
在压缩特性理论相关的研究中，发现并找到了天然橡胶和铅芯橡胶隔震支座竖向刚度相关的一个常数，并将其定义为压缩刚度因子，基于刚度因子建立了竖向刚度简化计算理论。