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化学元素,元素符号Nd,原子序数60,原子量144.242(3),属周期系ⅢB族,稀土元素,镧系元素。
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>无机化学>无机化学基本概念与无机化合物>释义
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upper side frequency
Upper Silesia Coalfield
upper singular exponent
upper solution
upper solution; supersolution
upper-stage
upper stage liquid rocket engine
upper strong derivative
upper subsemilattice
upper sum
upper surface
upper tangent arc
upper topological limit
upper transit
upper triangular group
upper triangular matrix
upper-trimmed subsequence
upper type
upper unitriangular matrix
upper urinary tract infection
upper urinary tract lithiasis
upper value
upper variation
Upper Volta
upper water level for flood control
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