来自case, 箱子，盒子。词义扩展为汽车底盘。

1. Neither the timber frame nor metal chassis were protected against rot.

木构架和金属底盘都没有采取防腐措施。

2. He would attach a cable around the chassis of the car and winch it up on to the canal bank.

他会把钢丝绳拴在汽车底盘上，用卷扬机把汽车吊到运河岸上。

3. The frame or chassis on which panels of electrical equipment may be mounted.

可安装电气设备板的框架或底座.

4. The stabilized power supply unit for the detectors is mounted at the rear of the chassis.

检测器的稳压电源安装在框架后面.

5. The new parts may include the sheet metal, the transmission, or the chassis.

新部件可能包括钢壳, 变速器或底盘.