springings造句

例句与造句

1. The accurately fitting inclined contact surface of the springings clearly proves the Roman origin of these arches.
2. However the interior surfaces of the wall retain certain elements ( toothing stones and springings for arches and vaults ) which enable us to visualize the structure that these buildings were to have.
3. It's difficult to find springings in a sentence. 用springings造句挺难的