一旦这些野马慌不择路地跑入钢围栏内，那么它们便失去了属于自己的未来。
As they run towards a trap of steel fencing, many of them face a future far from the range.
本文从材料方面研究了几个因素。包括跑合过程、钢的硬度及不同组织结构，对4340钢耐磨性的影响。
This paper studied the effect of several factors from the material aspect, including running-in process, hardness and different structures on the sliding wear resistance of steel 4340.
应用推荐