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- Keywords ore dilution rate;ore loss rate;shallow shrinkage stoping; 矿石贫化率;矿石损失率;浅孔留矿采矿法;
- Simple Discussion about the Control and the Decrease in Ore loss Rate and Ore Dilution Rate of Mine Enterprises 浅谈矿山企业控制和降低采矿损失率与矿石贫化率
- ore loss rate 矿石损失率
- Ore spotting and pit supervision, to minimize ore loss and dilution. 测定矿石点位，监督矿坑工作，将矿石损失和贫化降低到最小程度。
- This year the loss rate of animals has sharply declined. 今年牲畜死亡率大大下降了。
- The program simulated environment of RTT and packet loss rate measurements. NS2目前广泛采用的网络模拟软件，该程序实现了模拟环境下的RTT和丢包率的测量。-NS2 now widely used in network simulation software.
- The practice confirms that the two-indexes management methodhave obtained better efficiency with the prevention of ore loss and dilution efficiently. 实践证明，双指标出矿管理方法取得了较好的效果，能有效地防止丢矿和过贫化的现象。
- Disadvantages of sublevel caving without sill pillar lie in high ore loss and dilution as well as difficult control of ore loss and dilution. 无底柱分段崩落采矿法存在损失贫化大和损失贫化难以控制的缺点。
- The original block caving system with floor pillar exists many effects,such as development work large,constraction difficult,production efficiency lower and ore loss great. 原采用有底柱崩落法底板漏斗方案，存在采准工程量大、施工困难、生产效率低和矿石损失贫化大等问题。
- Guaranteed QoS includes three basic parameters: packet transfer delay, packet delay variation and packet loss rate. 有保证的服务品质包含三种参数：封包传输延迟、封包延迟变异，以及封包遗失率。
- The relation between ore loss and dilution during drawing in sublevel caving mining is analysedand studied on the hasis of the results from experiments and production. 本文根据实验及生产放矿结果，分析研究了无底柱分段崩落法放矿过程中矿石损失贫化的关系问题。
- It can be seen from comparison in simulation that it can minimum the delay, delay jitter and loss rate. 最后;通过仿真比较可以推知;该协议能最小化时延和时延抖动及丢包率.
- The mass loss rate and the ablation factor can be used to characterize the ablative properties of these materials correctly. 采用质量烧蚀率和烧蚀因子可较好地表征和比较烧蚀材料的烧蚀性能。
- Only one case had suffered abortion following amniocentesis,the fetal loss rate was 0.11%,no fetal loss case was found in cordocentesis. 羊膜腔穿刺术仅1例孕妇发生流产;胎儿丢失率为0.;11%25;脐静脉穿刺术尚未发生胎儿丢失的病例。
- Six varieties were compared on incidence, severity and loss rate of false smut of rice (FSR). 采用6个对稻曲病抗感程度不同的水稻品种(组合),调查稻曲病发病率、严重度并计算损失率。
- The loss rate increase gradually. Water loss rate of silkworm eggs decreases abruptly by 3%-5% in the Ji3 stage. 催青至己3、己4期，失水率呈突然下降的趋势，下降了3%25-5%25，说明胚胎发育中己3至己4期保持低水分散失可能是胚胎发育正常的生理要求。
- The loss rate of BMC value was similar between cancellous bone and cortical bone (P > 0.05). 不同年龄组的松质骨与皮质骨骨密度年丢失率无差异(P>0.;05)。
- In this paper,average Packet Loss Rate(PLR) and signal strength of the wireless link are measured. 该文对不同环境下无线链路丢包率、信号强度等参数进行了测量和分析。
- The study shows that both the roasted loss rate and the roasted strength increase with adding nitronaphthalene. 研究发现,加入硝基萘后,热态自流修补料的烧损率略有增加,烧结强度明显提高。
- A simpler mathematical model with less assumption to measure plasmid loss rate is developed in this study. 摘要本研究利用简单的数学模式与较少的假设推导质体流失率。
