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。

youdao

Double pipe with hydraulic brake system vacuum booster.

双管路液压制动系统带真空助力。

youdao

Tension setting out shall be employed and the tensioner shall be double-wheel and fully hydraulic type with hand brake .

采用张力放线，张力机采用双鼓轮式，要有手闸，全液压制动。

youdao