Lean ore是什么意思

用法例句

Research on the lean ores exploitation in the west district of Longshou mine of JNMC is relative to the feasibility of the lean ores exploitation.

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。

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

介绍了金川矿区镍贫矿资源开发利用及矿山生产的基本情况,并着重对金川矿区贫矿资源开发利用的意义做了详细论述。

The restilts reveal tha adding of rare-earth lean ore will lower the incipient temperaure of liquid phase and increase the amount of liquid which is benefitial to clinker formation, but it may also raise the calcining temperature of CaCO3.

运用XRD、DTA、高温显微镜等测试方法，研究了稀土贫矿对水泥熟料形成过程的影响。

By means of SEM、EDAX and OM, the petrographic structure and microscopic chemical composition of cement clinker have been researched by adding rare-earth lean ore.

采用SEM、EDAX、OM等分析测试方法，研究了稀土贫矿掺加条件下，水泥熟料的岩相结构及其微区化学组成。