Therefore, in order to solve the problem of the tractor noise, the exhaust noise, the engine ventilator noise and the noise of vibrating cover of the engine should be reduced first.

因此，解决该拖拉机噪声问题须首先降低排气噪声、发动机散热风扇噪声和发动机机罩振动噪声。

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The gas can be discharged to outdoor completely due to that the air is directly discharged aiming to smoke exhaust ventilator upwardly from the top end, thereby no air and odor are in door.

汽体由顶端直接向上对准吸油烟机排放，可以完全被 排出室外，室内没有汽体和气味。

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