(Down pipes)，催化转换器(Catalytic converters & DPF)，氧传感器(Oxygen sensor)，消声器(Mufflers)和 碳罐 （ Carbon canister ）等组成。汽车排气系统是主要是排放发动机工作所排出的废气，同时使排出的废气污染减小，噪音减小。
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Plastic Mufflers 铜消音器
Engine Mufflers 消声器
GUARANTEED MUFFLERS & BRAKES 明证汽车灭声器
MEINEKE DISCOUNT MUFFLERS 迈立奇平价排气系统修换厂
Mufflers & Brake 汽车排气管及煞车
GUARANTEED MUFFLERS and BRAKES 明证汽车灭声器
Mufflers shields 消声器罩
After optimizing the parameters of muffler by the method, five new mufflers are designed. Engine bench test with new mufflers are processed.
利用该方法对消声器的各个参数进行了优化，设计了5个新型消声器。
参考来源 - 单缸柴油机噪声源识别及排气噪声控制Noise control for units by sound insulation screen, installing mufflers on air supply duct of unit and swirl diffusers, it received good effect on reducing aerodynamic noise.
采用隔声屏降低机组噪声,在机组送风管段及风口处安装消声器,收到了良好的降低气流噪声的效果。
参考来源 - 剧场类建筑空调设计的模拟与分析·2,447,543篇论文数据，部分数据来源于NoteExpress
N-COUNT A muffler is a device on a car exhaust that makes it quieter. 消音器 [美国英语]
N-COUNT A muffler is a long scarf that you wear around your neck to keep warm. 长围巾
Shawls, scarves, mufflers, mantillas, veils and the like.
披巾、领巾、围巾、披纱、面纱及类似品。
The children were snugged up in overcoats, mufflers, and mittens.
孩子们都穿上了大衣，戴上了围巾和手套，全身都给裹得暖暖和和的。
The existence of higher order mode waves in expansion mufflers is proved theoretically.
从理论上推导了扩张室消声器内可能存在的高次波。
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