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            <p>&nbsp;降低发动机的排气噪声�Q��ƈ佉K��温废气能安全有效地排出。消声器作�ؓ(f��)排气���道的一部分�Q�应保证其排气畅通、阻力小�?qi��ng)��够强度。消声器要经�?00℃~700℃高温排气，保证在汽车规定的行驶里程内，不损坏、不失去消声效果�?/p>
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