本文旨在研究地衣芽孢杆菌对麻羽肉鸡的肠道组织结构及其盲肠微生物区系的影响。
The experiment was conducted to study the effects of Bacillus licheniformis on intestinal structure and cecal gut microflora in Mayu broiler chickens.
讨论了几个典型的羽流流量计算公式，结合一种二区自然通风模型，建立了热分层高度、通风量和中和界高度的计算式。
Discusses several representative equations of point source plume. Establishes calculating equations of thermal stratification height, ventilation rate and neutral level based on a two-zone model.
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