The entirely closed structure of mixing part, aggregate transmission system and dust removal system effectively reduce the pollution of dust and noise to the environment.

全封闭结构的搅拌主体、骨料输送系统及除尘系统，有效的降低了粉尘和噪声对环境造成的污染。

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They say they study them in aggregate, but are closed mouthed about what it is that they learn.

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