A functional index can return any standard SQL type except for large objects.
除大型对象外，函数索引可以返回任何标准sql类型。
Predatorprey model with feedback control and type II functional response function is investigated.
研究了具有反馈控制与第二类功能性反应函数的周期捕食-食饵模型。
The second type is multi-functional bottle opener, bottle opener mechanical lever type;
第二种类型为多功能开瓶器、机械式杠杆类开瓶器；
The second type is multi-functional bottle opener, bottle opener mechanical lever type;
第二种类型为多功能开瓶器、机械式杠杆类开瓶器；
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