[问题] 张瑞文为什么要使用我们爱科学的标记？

[oread]

令人费解。谈谈设计方案的背景与含义。:blink::blink:

 

[大熊猫]

为了振兴加拿大IT业，让我早日找到工作。老大，我好感动啊。

 

[mantou]

 

[LogyBear]

我们爱科学的标记是什么标记？

 

[oread]

古狗了一哈：

CFCs, also known as chlorofluorocarbons (composed of carbon, fluorine, and chlorine) were invented in the early 1930?. Over the years, they have served many functions, including propellants for aerosols, refrigeration coolants, and electronic circuit board cleaners. There are different types of CFCs: CFC-11 and 12 for example are common refrigeration coolants. CFC-11 is also known under the brand name of Freon.

:lol::lol:

 

[人在天涯]

咳,不就是氟利昂吗