They select a set of instruments to provide test signals and make measurements and then bolt the instruments into a standard, 19-in. rack.
他们选择一套设备来提供测试信号和度量，然后将这套设备固定在一个19英寸的架子上。
2
Another common obstacle on vehicle Windows is the set of bolt caps that hold some Windows in place.
车辆窗户上的另一个常见障碍物是用来固定窗户的螺帽。
3
Safety bolt is set on the valve body, when the pressure in the cylinder is too high, safety diaphragm will burst automatically to ensure the safety accident cases, for the safety of the bottle.