通过实验研究离心风机蜗壳扩张角对风机噪声及效率的影响。

By experiment, for the effect of fan expending Angle to noise and efficiency study.

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通过研究提出了在小麦粉中添加玉米粉制作发面饼实验的工艺、条件及评分方法。

In this paper the experiment method of the added corn flour flapjack was put forward .

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通过研究提出了在小麦粉中添加玉米粉制作发面饼实验的工艺、条件及评分方法。

In this paper the experiment method of the added corn flour flapjack was put forward .

youdao