例句與造句

1. a doubly nonnegative matrix a is defined to be an entrywise nonnegative and positive semidifined matrix
   對(duì)于給定的一個(gè)n階實(shí)方陣a，若其每一元素非負(fù)且半正定，則稱(chēng)為雙非負(fù)矩陣。
2. It's difficult to find entrywise in a sentence. 用entrywise造句挺難的