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废酸中大部分被利用了。
Much of the waste acid is utilized.
youdao
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由于不能回收废酸，所以这个方法是不经济的。
This method was uneconomic for it was impossible to recover the spent acid.
youdao
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由于不能回收废酸，所以这个方法是不经济的。
This method was uneconomic for it was impossible to recover the spent acid.
youdao