The effect and working mechanism of skeleton material, carbide-forming elements, rare-earth and non-metallic elements in the bond are discussed.
重点阐述了骨架材料、碳化物形成元素、稀土、非金属元素等在金属结合剂的作用及其影响机理。
The method of inductively coupled plasma-mass spectrometry for determination of impurities of 30 trace rare earth and non-rare earth elements in high purity ytterbium oxide was studied.
报道了高纯氧化钇中30种痕量稀土和非稀土杂质元素的电感耦合等离子体质谱测定方法。
Existent state variation of rare earth elements (REEs) in wheat rhizosphere and non-rhizosphere soils were studied using root - box technique.
采用根际袋法研究了稀土在春小麦根际土壤与非根际土壤中存在形态的差别。
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