Research purposes: Vibration rules of the track induced by passenger and freight trains forrailways with passenger and freight traffic are investigated.
研究目的：分析客货混运铁路专线客车及货车引起轨道振动的规律。
2
The paper discusses and analyses the specifications in Item 2 of Art. 346 of "Technical Management Rules and Regulations forRailways", and makes some comments.
对《铁路技术管理规程》第346条第2款的规定进行了探讨，提出分析和意见。
3
Upon completion of subgrade filling forrailways or highways, sometimes the straight line and curved line cannot close due to errors in construction or other reasons.