hardening造句
This can sometimes reveal a
hardening or lump that signals a tumor.
这样有时能发现硬物或肿块,这是肿瘤的信号.
By
hardening gold, people can then make coins and jewelry with it.
金子被加硬后, 人们就可以用它打造硬币和珠宝.
The case -
hardening or carburizing process is in wide use.
表面淬火 或渗碳法应用十分广泛.