重载列车在直线、曲线和坡道上牵引、惰行和制动时的动力学性能；
The dynamic performance while heavy haul train traction and braking on straight lines, curves and ramps railway road condition;
其实人都有惰行的，很容易就形成习惯做些其实并没有理由去做的事情。
It's kinda easy to just fall into a habit of doing stuff or consuming things without really having much of a reason for doing so.
其实人都有惰行的，很容易就形成习惯做些其实并没有理由去做的事情。
It's kinda easy to just fall into a habit of doing stuff or consuming things without really having much of a reason for doing so.
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