研究表明，风扇的舌部形状、舌部间隙、舌部倾角和蜗壳大小对风扇的性能有较大的影响。
The results show that the fan tongue shape, space and inclination have a larger effect on fan performance.
对某车辆的风扇蜗壳排气段进行了结构优化。
EXE is developed, and design for structure optimization to fan volute exhaust segment of a certain vehicle is carried out.
在发动机风扇周围的可卸盖壳，打开后可以够到发动机部件。
A covering around the fan section of the engine that can be opened for access to the components on the engine.
在发动机风扇周围的可卸盖壳，打开后可以够到发动机部件。
A covering around the fan section of the engine that can be opened for access to the components on the engine.
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