periodical load meaning in English

周期性负载

As the ratio of peak samples to total training samples is low , the prediction accuracy of peak load is poor when applying support vector machine ( svm ) model to predict a periodical load
在应用svm模型于具有周期性负荷的预测时，由于在训练样本中峰值或谷值样本所占比例很少，从而导致峰值荷载预测精度不高。
According to different mechanisms , there exist several types of resonance , including the bridge resonance induced by the periodical actions of moving load series of the weights , centrifugal forces and lateral winds of vehicles , the bridge resonance induced by the loading rates of moving load series of vehicles , the bridge resonance induced by the periodical loading of train vehicles excited by rail irregularities , wheel flats and hunting movements , and the vehicle resonance induced by periodical actions of the regular arrangement of bridge spans and their deflections
根据发生机理的不同，车桥系统可能发生几种不同形式的共振，包括由车辆重量、离心力、横向平均风荷载等形成移动荷载列的周期性动力作用引起的桥梁共振，由移动荷载列加载速率引起的桥梁共振，由轨道不平顺、车轮扁疤、轮对蛇行等周期性加载引起的桥梁共振；由桥跨的规则性排列及其挠度的影响，对移动车辆形成周期性动力作用使车辆出现的共振。