There is a switch board (control panel, distribution box) mounted on the wall.

在墙上装有一个开关板（控制盘、配电箱）。

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Next, select Panel-Group Box from the Visual Palette (Figure 23) and drag it on to the page under the output control.

接着从Visual Palette中选择Panel - Group Box(图23)并将其拖动到页面的输出控件下。

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BUS protection PANEL, a module (black box) containing electrical circuits for control and protection of electrical alternating current supply to the airplane.

汇流条防护板，黑匣子式的组件，内含控制和保护飞机交流电源的电路。

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