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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In this article, the author expatiates on the fixing actuality of the ventilator and introduces the method that reduces vibrating and control yawp by sound insulation cover.

阐述了通风设备的安装现状，介绍了用隔声罩减少振动，控制噪声的方法。

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The ducting hose end set funnel indraft cover use in ventilator installation. The ducting hose else end set discal air exit of power and heat supply set installation.

所述导风管的一端设有供排风扇安装的斗状吸风罩口，导风管的另端设有供电热装置安装的盘状排风口，斗状吸风罩口与盘状排风口相对应；

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