removal of silica ==> 除硅 removal of stone from submaxillary gland duct ==> 颌下腺导管结石除去术 ..
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This study is not only a breakthrough the bottleneck of silica gel formation and pulp filtration, but also a good removal iron and silicon completely, and a filterable cake is obtained.
本研究突破了在高硅铜冶渣湿法浸出回收有价金属过程中容易形成硅胶所造成难过滤的瓶颈；
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