According to amplitude analysis of the measurement signal, the probability DE sign method of finding the spring stiffness of the tractor's hydraulic draftcontrol system is stud ied.
以实测信号为依据，通过幅值域分析，探讨了拖拉机液压系统力调节弹簧刚度的概率设计方法。
2
You can use atom: control and atom: draft elements to create a moderation queue.
可以用atom： control和atom： draft元素创建队列。
3
OBJECTIVE to study the distribution and drug resistance of nosocomial infection pathogens from lower respiratory tract in senile patients and give draft preventive and control measures.