The open cast method is an advanced stripping technology with low operation cost.
拉斗铲倒堆剥离是一种先进的开采工艺，机械化程度高，开采成本低。
The traditional steam stripping method has many disadvantages.
传统汽提法存在的问题较多。
The invention relates to a recovery method of tin in tin-stripping waste liquid.
本发明为一种退锡废液里锡的回收方法。
The invention relates to a recovery method of tin in tin-stripping waste liquid.
本发明为一种退锡废液里锡的回收方法。
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