英语语法分析

Although being run for a unwheeling cycle, it could not be put into production for the significant change on the traction power policy of the nation.

该车曾经过一个架修期的运用考核，但由于国家牵引动力政策发生重大变化，未能投入生产。

Thus, the target is basically reached that the locomotive can run without replacement of the oil damper between two unwheeling repairs (at least 200 thousand kilometers running).

它们的特点是结构简单、阻力系数稳定、密封可靠，基本实现了机车走行一个架修期(至少20万公里)不换修油压减振器的目标。