back pressure
柯林斯词典
1. N the pressure that opposes the motion of a piston on its exhaust stroke in an internal-combustion engine 背压
2. N the exhaust pressure in external combustion engines (外部内燃机的)排气压力
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1. N the pressure that opposes the motion of a piston on its exhaust stroke in an internal-combustion engine 背压
2. N the exhaust pressure in external combustion engines (外部内燃机的)排气压力