选用碱性树脂铬矿砂生产出合格的叶轮。
Alkaline resin chromite sand is used to produce qualified impeller casting.
结果表明，弱碱性树脂d 301g可以提供较高的吸附量，在有机羧酸和水之间具有较好的选择性。
Results show that weakly basic resin D301G can provide high uptake capacity and high selectivity for acid over water.
研究了两种国产碱性树脂d296与D301催化性能的优劣，发现弱碱性树脂d301优于强碱性树脂d296。
Two domestic base resins, D296 and D301 were used respectively and the results showed that the weak basic resin, D301 is better than the strong basic resin, D296.
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