边柳State Key Laboratory for Advanced Metals and Materials; School of Materials Science & Engineering; University of Science and Technology Beijing任清勇State Key Laboratory for Advanced Metals and Materials; School of Materials Science & Engineering; University of Science and Technology Beijing刘泉林...
摘要: The revealed peculiarities of Sr-Nd isotopic composition of the lamproites imply substantial mixing of the plum substance with material of enriched lithosphere mantle and continental crust upon the processes of hybrid lamproitoid magma melting....
据《自然》杂志报道,科学家最近研究出一种以锶(Sr)做钟摆的钟,它是世界上最精确的钟,锶的原子结构示意图如图所示,请回答: (1)该元素组成的物质属于金属(“金属”或“非金属”) (2)锶原子的核电荷数为38 (3)该元素位于元素周期表第五 周期 (4)锶原子最外层容易失 电子.(填“得”或“失”) ...