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Production Performance of Chicken under Farmers’ Management and Their Roles at Urban Household Econo
This study was conducted to assess production performance of chicken under farmers’ management and their roles in the h......
运用S195型涡流室式柴油机冷起动过程的实测数据,分析了非稳态燃烧过程的不稳定性;针对3种不同的燃烧型式,进行了放热规律计算和分析。......