Ground signals are removed from high-speed railway, and on-board equipment directly pick up signals from ground equipment to control train operation.
高速铁路取消地面信号机，车载设备直接从地面设备提取信号控制机车运行。
2
An experiment was carried out to study the ground vibration induced by vehicle corssing speedcontrol humps.
本文还对车辆通过减速带时引起的地面振动进行了实测研究。
3
Through analysis of engine ground test data, it's learnt that dogleg method can resolve efficiently the rich oil and overrunning problem, and achieve rotational speedcontrol with strong robustness.