continuous fractionation column

例句：

1. 1. The continuousfractionation column is used to separate differentcompounds in a sample.
   连续分馏柱用于分离样品中的不同化合物。
2. 2. The continuousfractionation column was designed to improve theefficiency of the separation process.
   连续分馏柱的设计旨在提高分离过程的效率。
3. 3. Thecontinuous fractionation column was used to analyzethe chemical composition of the sample.
   连续分馏柱被用来分析样品的化学成分。