Is this triangle vertical or horizontal?

Venus is closer to Earth, so why did humans give up exploring Venus and prefer heading to Mars inste

lilunkexue

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How to make a Poo-Po-Po boat for Sosuke and Ponyo?

lilunkexue

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Speed bumps!! A mechanical marvel men can't resist~

jixiepangke

27 Views

How are the patterns painted on ceramics? #Science #StressRelief #Pottery #LearnSomethingNew

haoqiwanhuatong

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Relaxing video: Skilled workers at a satisfying job site~

jixiepangke

28 Views

Let's take a look at the amazing workplace of skilled workers!

jixiepangke

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They say diamonds are forever, but they can be burned and broken.

haoqiwanhuatong

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How to draw a circle?

lilunkexue

114 Views

The foreigner's giant plow tractor actually has a cab from the last century!

haoqimiaomiaomiaody

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Yemen is the first country to be destroyed by drugs, even children are not spared. How tragic is it?

tanmi

17 Views

Those irresistible machines~

jixiepangke

18 Views

How to lay a qualified asphalt road? #Science #Unzip #Paving #Knowledge

haoqiwanhuatong

22 Views

Unboxing video!! The irresistible charm of machinery

jixiepangke

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Let's take a look at the amazing workplace of skilled workers!

jixiepangke

63 Views

Why don’t civilian aircraft spray flames? The working principle of turbofan jet engines

Jinzhengmeiyongde

12 Views

【HISHE】Jurassic Park Parody 1

jiqishudezahuopu

23 Views

Why doesn't it hurt when a needle is stuck in my finger?

yaki1

45 Views

I advise you to quit porn (enlarging testicles)

xuetudexin-

44 Views

Super cool mechanical series of speed bumps! 7.18

jixiepangke

40 Views

Mathematical Genius

gaoerer___uan

30 Views