Because of harmful working conditions such as stick-slip vibration,traditional PDC bits were not adapted to hard formati......

为了研究机车处于粘着极限态时轮对的动态行为,提出平均驱动蠕滑率和动态蠕滑率的概念并对粘滑振动稳定性及其振动特点进行分析.粘......