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The wisdom of the working people! Using the principle of leverage to pull out piles. #Popular Scienc
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Why spray sewers? #Science #Unzip #Pest Control #Thermal Mist Machine
How serious are the consequences of being kicked by a horse? #Science #Unwind #Horse #FantasticBeast
Why does the concrete pump pipe become clogged? #Science #Decompression #Construction #ExtremeComfor
Why do we need to install the engine cylinder liner? #Science #Unzip #Machinery #IncreaseKnowledge
How are icebergs formed? Why is it called the tip of the iceberg? #IcebergTip#Science#Iceberg#IceSno
Why is sand used in sand casting black? #Science #Unzip #Casting #Machining #Cool Knowledge
Why can't you open doors and windows at a fire scene? Why can't you open doors and windows at a fire
Why are electrical fires so difficult to extinguish? #Science #Unzip #Firefighters #Fire
Why do finished glass products have to be baked with fire at the end?
Why not turn off the water when repairing a pipe? This is called pressure plugging. #Science #Unzip
Why do we need to use fire to spray waterproof materials? Actually, this is called hot-melt waterpro
The wisdom of the working people is to change the direction of force to move heavy objects. #Science
Why do we insert wooden nails when gluing wood together? #Science #Unzip #Woodworking #Physics
Do you know how a key opens a lock, and how a locksmith opens a lock? #lock#decompression#knowledge
Why split bamboo? #Science #Unzip #Bamboo #Woodworking
Use inertia to remove parts. #PopularScience #Unzip #Inertia #SlidingHammer
Why can paper also cut things when it rotates at high speed?
Why does steel need to be rolled repeatedly? #Science #Unzip #Rolling #Forging
What's the use of a wingsuit helmet, and what's the value of flight equipment? #翼装飞 #科普 #极体育
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