The phenomenon of the brake shoe nonaffine wear at Position 1 and 6 has been common since DF 4 series locomotives have been put into service.

　
英 美
  • 東風(fēng)4系列機車(chē)自投入運用以來(lái),其1、6位閘瓦偏磨現象普遍存在,而且間或機車(chē)緩解時(shí)出現閘瓦貼靠輪箍踏面,造成輪箍松弛。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan