例句與造句

1. ( ii ) if a is projectively flat , , then the shen - metric f is projectively flat if and only if / 3 is paralell with respect to a
   定理4 . 2 ( i )若sllen度量f一互紹止射影平坦，則。射影平坦當(dāng)且僅當(dāng)口關(guān)于。
2. It's difficult to find projectively flat in a sentence. 用projectively flat造句挺難的