The double and single pressure measuring instruments in the standard systems were developed specially for the measurement of pressure in vehicles with a compressed air brake.
用于标准系统双值和单值压力测量仪器，是为了满足带有压缩空气式制动器车辆压力测量，而专门研发的。
2
They select a set ofinstruments 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。
3
The HART protocol is a "DE facto" industry standardof intelligent instruments.