non degeneratenondegeneracynondegeneratenull vector非: mistake; wrong; errors退化: become vestigial; degenerate ...非退化的: nondegenerate; nonsingular非退化分布: nondegenerate distribution; nonsingular distribution非退化集: nondegenerate set下載手機(jī)詞典可隨時隨地查詞查翻譯