“负半定二次型”概念、定义、翻译-科学时代

单词	负半定二次型
释义	数学词汇手册负半定二次型 negative semi-definite quadratic form
随便看	yellow body yellow book Yellow Book Yellow Book Yellow Book Yellow-Boosting Powder yellow boy yellow brass yellow brown earth yellow-brown macules yellow-brown soil yellow buckeye yellow cat yellow cedar Yellow Chrysanthemum yellow chrysanthemum yellow cinnamon soil yellow-cinnamon soil yellow condition yellow copper ore yellow cosmos yellow coupler Yellow Crane Tower yellow croaker yellow daisy

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。