Incredible "powder dip coating", insert the frame into the powder pool, and interesting phenomena wi

The ancient navigational tool "Sextant" is still in use today! Do you know how it works?

lengkepu

1 View

Car Disassembly Video

haoyongwujingongju

11 Views

Why do we need to cut a slant on the tree when felling it?

haoqiwanhuatong

12 Views

How are mooring ropes secured? #Science #Unzip #MooringRopes #Ship

haoqiwanhuatong

10 Views

Why is steel colored after cutting? #Science #Unzip #Metalworking #CoolKnowledge

haoqiwanhuatong

21 Views

Why are the joints of steel cables so strong? #Science #Unzip #SteelCable #MachineryManufacturing #E

haoqiwanhuatong

16 Views

What modifications can be made to an excavator? #PopularScience #Unzip #LargeMachinery #Excavator

haoqiwanhuatong

16 Views

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

haoqiwanhuatong

16 Views

How a vibrator works

lingmengrinmon

19 Views

When a rotary drilling rig is used to drill and pile, why is the hole filled with mud?

haoqiwanhuatong

21 Views

Why do two people need to swing the hammer when forging iron? #Science #Unzip #Ironmaking #Forging #

haoqiwanhuatong

17 Views

Introduction to Tequila

yaki1

46 Views

Why does steel slag when forging iron? #Science #Unzip #Forging #ExtremeComfort

haoqiwanhuatong

10 Views

Some not-so-cold knowledge in Genshin Impact [Issue 22]

QiurenLin

24 Views

Could the rift in spacetime really open?

jingjing____

161 Views

稀土是什么？“中东有石油，中国有稀土”！了解中国稀土的重要性

lengkepu

2 Views

[Food Record] What is the limit of spicy food that humans can eat?

saiboshilu

1 View

People call math teacher

daoketa(moling)_04

3 Views

As a flight attendant, I also had mental resignation

minhangman

0 View

How can an anchor stop a massive ship? How long is the anchor chain? Animation explains the principl

lengkepu

3 Views