How tough is the crucible? Even molten steel at over a thousand degrees Celsius cannot melt it. What material is the crucible made of
A crucible is a container used to melt materials such as metals and ceramics. Crucibles play an important role in industrial production, especially in fields such as metallurgy, chemistry, and oil refining...
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2023-05-05 02:46:44
Ants are unaware of human existence, just like humans are unaware of the existence of advanced extraterrestrial civilizations?
Firstly, ants are aware of human existence, but they do not know that humans are intelligent species. In the eyes of ants, humans are no different from other species...
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2023-05-04 21:46:44