Solution mining is a available method to extract gold from lean ore, relic, waste dumps and tailings.

Optimization Design and Numerical Analysis of Excavating-filling Engineering for Lean Ore in Jinchuan No.2 Minefield

金川二矿贫矿开采充填设计优化及数值分析

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Description is made of the development and utilization of Ni lean ore resource and mine production in Jinchuan Mine.

金川公司龙首矿西采区贫矿开采研究，关系到贫矿开采能否可行，是金川做大做强的关键之一。

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Mineral resources in China have the next characteristics: there are many lean ore and few rich ore;

我国矿产资源的特点是贫矿多，富矿少；

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Study on a new process for pre-concentration of coarse lean ore

贫矿粗粒预选新工艺的研究

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Significance of Comprehensive Utilization of Ni Lean Ore Resource in Jinchuan Mine

金川镍贫矿资源综合利用的意义

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Base Stability of Jingchuan Lean Ore Area Mining by Natural Caving Method

金川贫矿区自然崩落法采场底部结构的稳定性

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Among 8 patients treated with tow-way cannulated compressive screw, 4 excellent, 2 good, 1 fair, 1 poor, the rate of excellent and good was 75.0%.

双头空心加压螺纹钉固定8例中优4例，良2例，可1例，差1例，优良率为75.0%。

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Among 27 patients treated with proximal femoral anatomical plate, 15 had an excellent result, 8 good, 3 fair, 1 poor, the rate of excellent and good was 85.2%;

股骨近端解剖型钢板固定27例中优15例，良8例，可3例，差1例，优良率为85.2%；

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To preserve the same twist, the torque should also be the same. Poor testicular salvage rate was the result of delayed presentation at this department in most cases.

为保持相当的扭转，扭矩也应该具有相同的比例。

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According to Merchant grade, 14 were evaluated as excellent, 3 as good, 3 as fair and 2 as poor. The rate of excellent and good results was 77.3%.

按照Merchant评分标准对术后功能进行综合评分，优14例，良3例，可3例，差2例，优良率为77.3%。

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In 9 cases of old fractures, 2 were excellent, 3 good, 2 fair and 2 poor. The rate of excellence and goodness was 55 6%.

9例陈旧性骨折，优2例，良3例，可2例，差2例，优良率556%。

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Several countries in Latin America, where the UN thinks one in three people is poor and the rate of poverty reduction is slowing, are looking at it with interest.

拉丁美洲的几个国家也饶有兴趣地关注着这种测量方法。根据联合国的数据，这几个地区的贫困人口比例达三分之一，而且减贫速度正在放缓。

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Among 23 patients treated with Gamma nail: 13 got excellent result, 7 good, 2 fair, 1 poor, the rate of excellent and good was 87.0%;

Gamma钉固定23例中优13例，良7例，可2例，差1例，优良率为87.0%；

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【 Results 】 Perinatal poor prognostic rate in the cases with abnormal reaction to NST was 37.2%, with-out significant difference in comparison with the normal ones ( 38.5%, P> 0.05).

结果无负荷试验异常者围生儿预后不良率为37.2%，与正常者（38.5%）比较无明显差异（P>0.05）。

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Single-copy routing delivers message through multiple forwarding, having poor delivery rate and reliability, while the Multiple-copy routing copy and forward message through multiple paths, having higher delivery rate.

单副本路由通过节点间转发来实现报文传递，投递率和可靠性较差。多副本路由通过复制转发的方式多路径地传输报文，具有较高的报文投递率。

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An effort to expand forest cover across north China to slow desertification, known colloquially as the Green Great Wall, has suffered from a poor survival rate of the trees planted.

为了延缓荒漠化进程，中国北部采取了扩大森林覆盖面的措施，即人们所谓的“绿色长城”，但是种在那里的树木成活率很低。

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The highest rate was 90.49% in 2002. The poor eyesight rate in female students was remarkable higher than that in male students for a period of 15 years ( P < 0.01).

15年中，女生视力低下率均显著高于男生（P

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The best therapeutic outcome was obtained 6 months after the injection, and the best, good and poor therapy rate were 44%, 48% and 8%, respectively.

结果患者于术后6个月时获得最佳疗效，其疗效优、良、差率分别为44%、48%和8%。

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As the data intrusion detection system processed contains a lot of redundancy and noise characteristics causing slow training and testing process, high resource consumption as well as poor detection rate.

由于入侵检测系统处理的数据含有大量的冗余与噪音特征，使得系统耗用的计算资源大，导致系统训练时间长、实时性差，检测效果不好。

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Britain's poor productivity rate was revealed in the dismal forecasts for economic growth outlined in the Budget by Chancellor Philip Hammond.

英国大臣菲利普·哈蒙德于日前公布预算，在黯淡的经济增长预期中，该国低下的生产力被暴露无遗。

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