Reasonable choice and correct design of the diesel engine exhaust system is an important part of diesel engine system design.

合理选择和正确设计柴油机的排气系统是柴油机总体设计的一项重要内容。

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The paper also describes the improved design method of motorcycle engine exhaust system which reduces the exhaust noise and the measures the motorcycle should take during its operation.

介绍了为降低排气噪声而改善发动机排气系统设计的方法和摩托车使用过程中应采取的措施。

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So working for yourself makes your brain more powerful in the same way a low-restriction exhaust system makes an engine more powerful.

所以给自己干活时，思维会更活跃有力。 正如发动机排气系统顺畅，才能运转良好一样。

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After a recent meeting with Gildo Pallanca Pastor, race-car driver and owner of a tiny car company in Monaco called Venturi, Wynne will soon be able to move up to a 300hp engine with better turbochargers and a wider exhaust system.

FORBES: Magazine Article

The V8's vocals will bring a tear to your eye, with pitched, hissing over-notes coming from the turbochargers (17-psi max boost) and a major-league, Late Model Sportsman-style warble from the tailpipes, abetted by an active exhaust system that opens up as the engine revs rise.

WSJ: 2013 Bentley Continental GT V8 Review: Get More From Less | Rumble Seat by Dan Neil

Michael Cross, who heads up emissions solutions at diesel engine maker Cummins, says they will need help from an exhaust treatment system.

FORBES: Clearing the Air