plowing

1.They putaway money to buy a plowing ox to expand their plantings and becomeself-sufficient.

他们还攒钱买了一头牛，扩大了种植品种，可以足了。

2.The serious plowing, plastic deformation, adhesion and fatigue wear are dominant for PA1010, and the transfer films of PA1010 on the counterface are not homogeneous and have tears in the films.

PA1010的磨损主要表现为严重犁削、粘着、疲劳和塑性变形，其转移膜不均匀，且有脱落现象。