Tufftride
(氰化钾盐浴)扩散渗氮, 软氮化
🗣️ 情景例句
I see under activities that
我注意到在 活动 项目中提到
Pen and ink is wit's plough.
笔墨是才智之犁。
We always make friends with each other again.
我们总是重新交朋友。