Introduction:Milk is a nutritious,white or slightly yellowish liquid,which is a biological secretion of mammalian breast......

为了解酸雨对温州三垟湿地水体氮营养盐数量的影响,本文测定了三垟湿地水体中不同形态氮的含量,其中氨氮2.90～10.75 mg·L-1,平......

Seawater samples were collected in the water column from the Canada Basin aboard RV Xuelong in August 1999. Concentratio......

本文对野生植物乌楣的营养成分进行了分析 ,结果表明 ,乌楣中含有多种营养成分 ,丰富的矿质元素和维生素及β-胡萝卜素。乌楣中至......