step load change中文什么意思

例句与用法

1. Step load change
   负荷阶跃
2. Used the metering - out control system in which the hydraulic cylinder was the executive element as research object in this thesis , the experimental research about the effect on the pressure p1 , p2 of the hydraulic cylinder chambers when series - connecting throttle valve or governor valve on the return oil - line under the step load changing have made
   本文以单出杆液压缸为执行元件的出口节流调速系统为研究对象，在其回路上分别串接节流阀和调速阀，当负载发生阶跃变化时，对液压缸两腔压力p _ 1 、 p _ 2的影响进行了试验研究。