The results indicated that ADG, ADFI and F/G had no significant difference among 3 groups (P>0.05), there was a tendency for reduced diarrhea frequency in the piglets in MF group and HF group.

结果显示，3个粗纤维水平对仔猪的平均日增重、平均日采食量和料重比均无显著影响（P>0.05），中、高粗纤维水平有降低仔猪腹泻频率的趋势（P>0.05）；

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The L F signals are transformed by entropy based on wavelet packet algorithms for best basis selection, and the results are displayed in time- frequency space namely phase plane.

该方法采用基于熵的小波包最佳基选取准则，对局部损伤信号进行自适应小波包分解，将分解结果显示于时—频空间即相平面上。

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The frequency domain and space domain anti-stealth techniques of radars are summarized, and Fight F-117A is taken as a typical example in order to discuss the radar detectability of stealth vehicles.

本文综合论述雷达的频域反隐身与空域反隐身技术并以F - 117a飞机为例探讨了隐身飞行器的雷达可探测性。

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