What is "copper ammonia silk"? When the blue liquid is squeezed into the solution, an interesting ph

The Epic Documentary "The Legend of Grandpa Niu"

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Why do we need to grind off the bark? This is the process of peeling and rounding the wood before pe

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Speed bumps for boys and girls!! Those novel machines

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Learn mathematics, physics and chemistry well, magic is everywhere

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Speed Bump!! Cool Mechanical Series 6.17

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Speed Bump Worker Series

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Men's Speed Bump Worker Series ~2.13

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Some useful life tips~

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I wish you all a happy Dragon Boat Festival!

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Come take a look at the amazing work site!!

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Water cockroaches

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It is said that 1 cannot be divided by 0. What if I insist on doing it?

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Inertia, it's amazing, right?

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What is a "Koch snowflake"? Why does it have a finite area but an infinite circumference?

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Jia Xintang fiercely criticizes operations 😨😨😨😨

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Why do we need to cut rubber blocks? #Science #Unzip #IncreaseKnowledge #Rubber

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As long as the boundary is clear, both sides can play freely.

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The genius invented the "Mecanum Wheel"! Why can it move sideways, diagonally, and rotate in place w

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What are wind dampers? Why do skyscrapers withstand typhoons? It's all thanks to this thousand-ton i

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The secret of the square wheel's forward motion: the catenary, which mathematicians have studied for

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