管接头组总成-带单向阀用于主车的气制动系统，起到各气源间连接的作用。
The tube tie-in group assembly is used in tractor or trailer equipped with a dual-circuit brake system, it connects the air-fountains.
管接头组总成-带单向阀用于主车的气制动系统，起到各气源间连接的作用。
The tube tie-in group assembly is used in tractor or trailer equipped with a dual-circuit brake system, it connects the air-fountains.
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