初步构建了含有26份棉花抗病品种的核心种质库。
Core collection including 26 cultivars was constructed based on AFLPs.
目的：初步构建我国农村公共卫生体系绩效评价指标。
Objective: To construct performance evaluation indicators for public health system in rural area of China.
第四部分是初步构建了一个“自主学习”数学课堂教学模式。
The forth part is the preliminary structure of self-regulated learning on senior mathematics teaching mode.
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