Double pipe with hydraulic brake system vacuum booster.
双管路液压制动系统带真空助力。
2
Braking system double pipe air brake system, parking brake, exhaust brake.
双管路气制动系统，带驻车制动、排气制动。
3
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.