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我国砂金资源丰富,尤其是北方采用桩柱式采金船开采的金矿较多.在开采中,贫化率和损失率是衡量经济技术效果的重要指标之一.
The gold resources in our country are abundant, especially the gold mining by the pillared gold mining vessels in the north is more. In mining, the dilution rate and loss rate are one of the important indexes to measure the economic and technical effects.