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Knowledge and application of boron

5 July 2021Hong

Boron is a ordinary non-metallic element, has a variety of allotropes: tetragonal crystal, rhomb, diamond thing and nebulous shape. Knowledge and application of boron Amorphous boron powder is a kindly of powder that the color from dark brown to dark Crystal boron is laborious andbrittle insoluble with sinisteru to silver metallic luster Boron conductivity was […]

Jewelry Box Glossary

29 June 2021Hong

Discover some usual jewelry creel terms you may not know. Reference these terms when shopping for your jewelry pannier and procure a correct notion of what options you keep Jewelry Box Glossary Below are some normal jewelry creel terms you may not know Reference these terms when shopping for your jewelry basket and secure a […]