短語詞組短語quadratic sum resolution 平方和分解quadratic sum decomposition 平方和分解residual quadratic sum 殘差平方和weighted quadratic sum 加權平方和weighted quadratic sum meth -od 平方加權和法sum of quadratic dispersion 離差平方和sum of quadratic ratios 二次比式和direct sum of quadratic forms [數(shù)]二次型的直和sum of quadratic completion times 完工時間平方和 返回 quadratic sum