dowex ion exchange resin

例句：

1. 1. Dowex resin is widely used in the field of chromatography.
   Dowex树脂在色谱学领域被广泛使用。
2. 2. The Dowex resin was extracted from natural sources.
   这种Dowex树脂是从自然来源提取的。
3. 3. Dowex resin is a versatile material that can be used for various applications.
   Dowex树脂是一种多功能材料，可以用于各种应用。