a rare fine view 极好的风景 rare-earth element 【化】稀土元素 n. 稀奇; 珍贵 ... www.chinabaike.com|基于33个网页 2. 希土类元素 金属加工常用词中是英对照表... ... 起动摩擦 starting friction 希土类元素 rare-earth element 希土类酸化物 rare earth oxide ... ty-lsq.blog.163.com|基于4...
Related to rare-earth element:noble metal (râr′ûrth′) n. Any of a group of 17 naturally occurring metallic elements that have similar properties, consisting of scandium, yttrium, and the 15 elements with atomic numbers 57 through 71 (the lanthanides). The rare-earth elements are widely...
The meaning of RARE EARTH ELEMENT is any of a series of metallic elements of which the oxides are classed as rare earths and which include the elements of the lanthanide series and sometimes yttrium and scandium —called also rare earth metal.
Rare earth element(REE) mining and processing are large-scale industries that generate significant quantities of waste. In addition, the ores contain variable amounts of nontarget toxic metals, fluorine, andradionuclides. Past REE mining and processing therefore have led to significant environmental imp...
Global rare earth element production amounted to an estimated 350,000 metric tons of rare earth oxides in 2023. With the largest known reserves worldwide, it is not surprising that China's rare earth production alone accounted for roughly 69 percent of the total global production in 2023. ...
Since cerium is the most abundant of the REEs on Earth, and because its toxicity is most likely influenced by the fact that the element closely resembles Ca2+ in form and function, it was decided to undertake a plant tissue analysis to determine cerium uptake in roots and shoots when influen...
The rare-earth element (REE) distribution in natural apatite is analysed by micro-PIXE, cathodoluminescence (CL) microscopy and spectroscopy and electron s... D Habermann,T Götte,J Meijer,... - 《Nuclear Instruments & Methods in Physics Research》 被引量: 35发表: 2000年 Mineral Thermometry...
et al. Rare-earth element geochemistry as a tracer for clarifying the provenance of the stream sediments in Namhan River, Korea. Chin. J. Geochem. 25 (Suppl 1), 270 (2006). https://doi.org/10.1007/BF02840268 Download citation Issue DateMarch 2006 DOIhttps://doi.org/10.1007/BF02840268...
2. Effects of rare earth element on physiological metabolism in crops. J Rare Earth Society2 (2) 75–79 CAS Google Scholar Xie HG, Chen FM (1984): The effects and technique of rare earth elements on sugar beet. Heilongjiang Province Agriculture Science1, 8–10 Google Scholar Yan ZL, ...
Rare earth element (REE) abundances were determined on 5 whole-rock samples from each intrusion. All the REE fractionation patterns are similar, exhibiting smooth-trending enrichments of light REE and a prominent negative Eu anomaly. Concentrations of total REE are very much higher than for most ...