因此，辊子表面有极高的硬度、脆性及热不稳定性。

Therefore, the roll surface is extremely hard and brittle and it is thermally unstable.

youdao

因此，辊子表面有极高的硬度、脆性及热不稳定性。

Therefore, the roll surface is extremely hard and brittle and it is thermally unstable.

youdao