Considering its colourable and castable nature, its extended hardness range, low wear and superior load bearing capacity, polyurethane is a smart substitute for rubber.

考虑到着色和浇铸料性质，选择具有更大硬度范，损，优越承载能力聚氨酯代橡胶是明智。

The statue of General Sedgwick, cast from cannons captured by the VI Corps which he commanded during the Civil War, has rowel spurs that turn.

塞吉维克由一门他在内战中领导六团缴获大炮浇铸而成，周是马刺上小齿轮。