mechanical defect

• 机械上的缺陷

mechanical defect的用法和样例：

例句

1. One of the lorries dropped back with a mechanical defect.
   一辆卡车因出故障而落在后面了。
2. The new car had to be withdrawn from the market because of a mechanical defect.
   那种新汽车因有机械缺陷只好撤出市场。