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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。
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).
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