vanadium to nickel ratio

例句：

1. 1. The steelindustry uses vanadium and nickel to improve its strength and toughness.
   钢铁工业使用钒和镍来提高其强度和韧性。
2. 2. The chemical engineers were analyzing the vanadium to nickel ratio in the sample.
   化学工程师们正在分析样本中的钒与镍的比率。
3. 3. The researchers found that the vanadium to nickel ratio was higher in some areas than others.
   研究人员发现，某些地区的钒与镍的比率比其他地区高。