As a high voltage single phase nonlinear load, the electrified railwayload has become one of the harmonic sources of power system.
作为高压单相非线性负荷的电气化铁道，是引起电力系统谐波污染的谐波源之一。
2
This paper narrates how Hantun coal mine transforms the old railwayload line into automatic loading system and introduces the principle and structure of this system.
简要叙述了南屯煤矿将旧铁路装车线改造为自动添加系统，介绍了该系统的原理、构成等。
3
This paper describes general structure design and structure load test of girder type railway bridge erecting machine with single simple supported beam and overhead transversely travelling trolley.