例句與造句

1. These cracks occurred at either the beam flange or in the column flange depending on the reentrant corner weld angle .
   這些裂紋視凹形焊角的不同，或者出現(xiàn)在橫梁翼緣上，或者出現(xiàn)在立柱翼緣上。
2. It's difficult to find reentrant corner in a sentence. 用reentrant corner造句挺難的