The sunscreen mechanism of titanium dioxide
IndustryToday (07-21)
According to the different wavelengths, ultraviolet rays are divided into short-wave regions 190-280nm, medium-wave regions 280-320nm, and long-wave regions 320-400nm. Ult...
Preparation and application of amorphous boron
Innovations13Days Ago (07-08)
Amorphous boron is a kind of dark brown powder chemical products, usually used in metallurgical and aerospace fields....
The Main Structure and Matching of Single Row Cylindrical Roller Bearings
Tech42Days Ago (06-09)
Single-row tapered roller bearings are mainly used to bear radial and axial combined loads mainly radial load, is a very common type of bearing. Many people are not very c...
Application of aluminium nitride refractories
Industry71Days Ago (05-11)
Aluminium nitride is a compound of nitrogen and aluminium, the chemical formula is AIN, hexagonal crystal system. The colour is light blue or green. Mohs hardness 5. The t...