Made from“rare earth”elements,these filters absorb or remove certain narrow bands of color in the spectrum, transmitting the adjacent colors. motion.kodak.com motion.kodak.com 这类滤光镜由“稀土”材质加工而成,它能吸收或去除光谱中的某些窄频光波,允许其他 颜色的光穿过。
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Rare - earth elements and depositional environments of the Sinian system in southwestern Hunan are discussed. 湘西南震旦系是在“江口裂谷”作用下形成的一套特殊地层. 互联网 The effect of addingrare earth elements, metals, metal carbides into cemented carbide, are summarized. ...
elementn.[C] 1.要素,特色 2.【通常作单数】某事物的少量,某事物的启示或痕迹;自然的或合适的环境或栖息地 3.【化】元素 4.[the elements]自然力, 天气等(尤指坏天气) rare roastedadj. 半熟的 rare book善本 earth'sa. 地球的,土地的 earth(ing)接地 ...
Rare-earth element, any member of the group of chemical elements consisting of three elements in Group 3 (scandium [Sc], yttrium [Y], and lanthanum [La]) and the first extended row of elements below the main body of the periodic table (cerium [Ce] throug
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 elements are not essential to plants. However, plants can absorb REEs from soil through roots and can uptake REEs via leaves exposed to atmospheric particles containing REEs, mainly from REE mining areas (Ichihashi et al., 1992; Tyler, 2004; Volokh et al., 1990; Liang et al.,...
Miningrare-earth(稀土)elements(REEs)haslongbeenconsideredadirtybusiness,asitcanleadtowaterandsoilpollution,butanewtechnologydevelopedbyChinesescientistsmaychangethetrend,offeringagreeneralternativefortheindustry.REEs,especiallyheavyones,areanessentialpartofmanyhigh-techdevices,fromtheenginesofelectriccarsandsmartphones...
Rare-earth element - Electronic Structure, Ionic Radius: The chemical, metallurgical, and physical behaviours of the rare earths are governed by the electron configuration of these elements. In general, these elements are trivalent, R3+, but several of t
Rare earths include a list of 17 chemical elements that, over the past decades, have become increasingly sought-after due to their use in many advanced technologies. The end uses of rare earths include the production of magnets, batteries, catalysts, displays, and more. Many industries are high...