请翻译工厂碱炼使用的为浓度30的NaOH溶液工厂内有一个容量200多吨的碱液灌每天会根据该碱液罐的液位计差值计算消耗量。
The factory uses a 30% concentration NaOH solution for alkali refining. There is a tank with a capacity of over 200 tons of alkali solution in the factory, and the consumption is calculated daily based on the difference in the liquid level measured by the tank's level gauge.
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