If the separating rate equation of straw walker is direct applied to calculating the separating rate of tangential threshing unit, a considerable error would be met in the results.

将逐稿器的分离率计算公式应用于切流式谷物脱粒装置凹板的分离率计算时，将产生较大的误差。

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Professor Walker says straw takes in carbon dioxide as it grows.

VOA: special.2009.10.05

Professor Walker says there are many good reasons for using straw.

VOA: special.2009.10.05