run-in
['rʌnin]
n. 试车；插入部分；争论
同义词
参考例子
1.Zhang Hao said through The four-month run-in, and is now basically the shape.
张昊透露，经过四个月的磨合时间，现在已经基本上已经成型了。
2.The principal disadvantages are the long run-in time required for proper channeling.
主要的缺点是，为了得到合适的油路，需要很长的磨合时间。
3.If the run-in box is followed by any other type of box, including another run-in box, it is transformed into a block box.
如果一个平行例子下面紧接着一个另外一种类型并且包含另外一个平行盒子的盒子，那么它将被转换为一个块级元素。
英文解释
n.
1.an angry dispute
网络释义
run-in
车辆出入通道; 汽车通道; 路口; 口角;
run-in test
空车试验; 运转测试;
run-in index
平行式; 平行式索引;
run-in period
试车周期;
a run-in
起了一点小争执;