直接法包括普查法(Census methods)、枚举法(Enumeration methods)、人群调查法(Population surveys)等,通过调查直接获得各类高危人群的规模(数量)或通过流行病学抽样调查对高危人群规模(数量)进行...
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Enumeration methods are only applicable to dispersed variable optimization.
枚举法只适用于离散变量的优化。
The simple enumeration methods about the spanning-tree of several types of graphs are obtained.
另外附带地给出了几类图的支撑树的简便计数方法。
That of isolation methods for soil fungi and the indirect and direct enumeration methods for measuring soil fungi;
综述了分离土壤真菌的方法以及测定土壤真菌的间接计数法和直接计数法；
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