Design

The secret about divided mineral particles

Apr 05, 2020

Sand is a granular material composed of finely divided rock and mineral particles. It is defined by size, being finer than gravel and coarser than silt. Sand …

The energy deposition of secondary particles

Mar 20, 2020

In physics, mathematics, and related fields, a wave is a disturbance (change from equilibrium) of one or more fields such that the field values oscillate …