中国精学生妹品射精久久,国产成人盗摄精品a片在线观看,天天躁日日躁AAAAXXXX,邻居漂亮的妻子5在线观看

【Know Tungsten】What Is Tungsten Boride?

The compound formed by boron and an element with a smaller electronegativity than it is called a boride. Borides are generally very hard, chemically inert, and often have special physical and chemical properties. They are very important modern new non-metallic materials.

Tungsten boride is usually made by directly sintering tungsten powder and boron. All tungsten boride materials are hard and brittle and have conductive properties.

The main uses of tungsten boride are:

  1. Pharmaceutical intermediates
  2. Military hard metals
  3. Superhard material additives
  4. Thermal spray materials

Comments are closed.

Address: 3F, No.25-1 WH Rd., Xiamen Software Park Ⅱ, FJ 361008,China Copyright ? 1997 - 2024 CTIA All Rights Reserved
Phone:+86-592-5129696,+86-592-5129595;    Email: sales@chinatungsten.com
舊版