Why install a ball on the roof? Surprisingly, so many people don't know
Audit experts:Luo HuiqianAssociate Researcher, Institute of Physics, Chinese Academy of SciencesDo you have any friends like me? Every time I look at the scenery on the rooftop, my attention is attracted by the constantly rotating metal balls on the roof. Are everyone curious about these metal balls that frequently appear on rooftops or on the roofs of factories? What are these round and rolling guys used for, and why do they always appear on the roof?Today, let me take you all to understand the past and present lives of these little things...
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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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Jack Ma invested 24 billion yuan, JD.com invested 32 billion yuan, Huawei settled here, and "Second Shenzhen" is about to be born?
Since the reform and opening up, some coastal cities have developed rapidly, and Shenzhen is one of them.Until today, Shenzhen has become a world-renowned international metropolis and is also known as the "Silicon Valley of China"...
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