One end of the upper surface of the arc-shaped baffle of the upper cover is provided with a handle, and the other end is provided with a medicine boxchamber.
另一端的上表面的弧形挡板上封面，是提供了一个口实，和另一端的是提供了一个医药箱厅。
2
To train a rat, the experimenter placed it in an operant conditioning chamber: a small plastic box with a lever at one end.
为了训练小鼠，实验人员把它放在一个操作性条件反射室：一个一端置有操作杆的塑料箱。
3
When a charged particle zips through the chamber, the vapour condenses into a trail of droplets showing the particle's path and, if the box is placed in a magnetic field, its electrical charge.