#YJ47 | Live at Tsinghua University’s 113th Anniversary Celebration

Haha, it's all just silly stuff in here!

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Can you drive an excavator?

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Imported Bearings

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A man's speed bump

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When You Pick Up a Shell Casings by the Roadside

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[Uncle Qiu Takes a Look] The video has been packaged—welcome to check it out!

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[Miao Xiaoge's cartoon works] Cartoon car video cartoon engineering vehicle video children's educati

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How a Car Engine Works

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Super cool mechanical series of speed bumps! 11.16

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Elbow fabrication

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Today's super cool mechanical gadgets from Mechanical Punk!

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Why Are Raised Road Markers Being Scraped Off? #Science #StressRelief #Construction #LearnSomethingN

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Technology changes life.

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Liebherr Excavator R9800

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Magical Tool

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Super cool mechanical series featuring speed bumps! 11.27

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Give Your Car a Deep, Thorough Cleaning!

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Machinist Skills Unleashed! The “Level 8 Machinist” in Handcrafted Precision

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The Spoon-Making Process

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Cement Fence Manufacturing Process

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