under speed meaning in Chinese

速度不足

For engine : battery volt low , oil pressure low , water temperature high , over under speed
发动机：电瓶电压低油压低水温高超速欠速
Abstract : taking single - rope drum wind as analysing object , the paper analyses safety coefficient of main rope using the dynamic state method under speed up , constant the speed , reduce the speed and emergency braking , change law is gotten comparing them with " mine safety standards " , points out existing problems and solving methods of safety coefficient in selecting and using rope in home
文摘:以立井单绳缠绕式提升机为研究对象，从动态方面分析提升钢丝绳安全系数，得出其在加速、等速、减速、紧急制动状态下的变化规律，与我国《煤矿安全规程》的要求进行比较，指出目前国内选择和使用提升钢丝绳在安全系数方面存在的问题和解决办法。