class characteristic meaning in Chinese

一般特征(文件)

Component class characteristics
>组件类特性
The thesis roots in the item supported by " fifteen " aviation funds , - new type aeronautic linear dc motor ( ldcm ) , study its classes characteristics and work principle , mainly researches the drive and control technique of aeronautic linear dc step motor ( ldcsm ) using in emergency discharging oil valve on airplane
本文源于“十五”航空支撑基金项目-新型航空用直线直流电动机。论文研究了直线直流电动机的分类、特点及其工作原理，重点针对飞机应急放油阀用航空直线直流步进电动机驱动控制技术进行了研究。