詞語：trace-metal
trace-metal的參考例句
1.Preconcentration and Separation of Trace Metal Ions Using 1-(2-Pyridylazo)-2-Naphthol Loaded on Silica Gel. 用1-（2-吡啶偶氮）-2-萘酚改性硅膠富集和分離痕量金屬離子（英文。
2.A simple and rapid new method for on-line detection of trace amounts of heavy metal ions in industrial wastewater is presented. 本文提出了一種簡單、快速的在線檢測工業廢水中痕量重金屬離子含量的新方法。
3.The conditions and methods for the determinating of trace oxygen and hydrogen in metal materials by the impulse-heating inert gas fusion method are presented. 敘述了惰性氣氛熔化法測定金屬材料中微量氫和氧的條件和方法。