经稀土处理的无细胞滤液对马铃薯块茎组织的浸离力降低。
The maceration to potato tuber tissue decreased when the cell free filtrate was treated with La.
其特征在于 采用常压加酸预浸、再加压氧浸出，将羰化合成残渣中的贱金属浸出，过滤分 离得到固体贵金属精矿。
The process is acid adding pre-leaching at normal pressure, pressurized oxygen leaching to leach out base metals and filtering separation to obtain solid noble metal concentrate.
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