National Code短语¹⁴⁴⁹⁷²⁺² 基本例句 国家规范 According to the national code, the horizontal earthquake force is calculated by the acceleration response spectrum. The force is closely related to the base vibration period of building structure. 我国现行建筑抗震设计规范中，通常采用加速度反应谱来计算建筑结构的水平地震作用，结构地震反应的大小主要通过与结构自振周期相关的地震影响系数来体现。 cnki