活性: [化学] activity; active; activated◇活性肥料 active fertilizer; 活性酵母 active dry yeast; 活性粘土 [材料] activated clay; 活性染料 reactive dye; 活性溶剂 active solvent; 活性物质 [电子学] active material; active substan
元素: 1.(要素) element; elementary substance2.[数学] [化学] element 短语和例子水是含有氢元素和氧元素的化合物。 water is a compound containing the elements hydrogen and oxygen.; 元素表 list of elements; 元素分析 [分析化学] ultimate a