multi-function routine polarograph

例句：

1. 1.The multi-function routine polarographis used to analyze the chemical composition ofsamples.
   多功能常规极谱仪用于分析样品的化学成分。
2. 2. The polarographic method is widelyused in the analysis of metals andalloys.
   极谱法在金属和合金的分析中广泛应用。
3. 3. The polarograph was invented bya scientist who wanted to improvethe accuracy of his analytical instruments.
   极谱仪是由一位科学家发明的，他想要提高他的分析仪器的准确性。