TOP GUIDELINES OF CRYSTAL

These crystals were formed around 1,000,000 decades in the past inside the Earth's crust. They occur if the liquid inside the Earth consolidates and the temperature chills. Other crystals variety if the liquid makes its way throughout the clefts and dispense minerals in to the clefts.①压电效�?在机械力(压力或拉�?作用下，水晶�