单词	alternative
释义	alternative 交错的，交替的，择一的，备择的；交错，择一；备择方案，供选方案
随便看	quotient variety quotient vector space quotity Q-Z algorithm Raabe criterion Raabe, J.L. Raabe test rabbit constant rabbit-duck illusion rabbit sequence Rabuel, C. Racah 6-j-symbol Racah algebra Racah coefficient Racah, G. Racah polynomial Racah V-coefficient Racah W-coefficient Radau, J.C.R. Radau quadrature Radau quadrature formula Rademacher function Rademacher, H. Rademacher system of functions Rademacher system of orthogonal functions

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