曲轴箱压力
crankcase pressure signal
crankcase pressure
制动蹄作用压力
application pressure of brake shoe assebmly
制动蹄释放压力
release pressure of brake shoe
制动器增压回路压力检查
brake boost circuit pressure check
制动器压力低指示器
low brake pressure indicator
制动器冷却油压力
brake cooling oil pressure