Polycaprolactam
聚已内酰胺, 尼龙-6
🗣️ 情景例句
I haven't decided whether I will go camping or not, but it is certainly possible.
我还没决定是否去露营，但还是有可能去的。
No great loss without some small gain.
塞翁失马，安知非福。
One is the general atmosphere of secrecy in which it is carried out,
一是科研工作中普遍存在的保密气氛；