首页  英汉  汉英  英英  词组  用法  例句  同义词  写作  俚语  缩写  词源  词根  法汉  德汉  日汉  俄汉  韩汉  西汉  意汉  泰汉  越汉

单词	positive definite
释义	positive definite adjective 1 : having a positive value for all values of the constituent variables positive definite quadratic forms 2 of a matrix : having the characteristic roots real and positive Word History First Known Use 1904, in the meaning defined at sense 1
随便看	counterrotation counters countersalient countersank counterscarp counterscarps countersea counterseal countersecure counterselection countersense countershading countershadings countershaft countershafting countershafts countershot countershots countersign countersignature countersignatures countersigned countersigning countersigns countersink

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。