Perlition
表面渗碳用液体渗碳剂
🗣️ 情景例句
Well, it was great to see you again. Let's not wait this long next time.
可以再见到你真是太好了，希望我们下次见面不用等这么久。
There is something in what she said.
她说的话里有些重要的内容。
The further off this solid obstruction, the longer time will elapse for the return of the echo.
固体障碍物越远。回声返回所用时间就越长。