What is silicon nitride used for?
Silicon nitride is known as Si3N4 powder, it's a super-hard substance, which has lubricity itself, and is resistant to wear and oxidation at high temperatures.
Silicon nitride is known as Si3N4 powder, it's a super-hard substance, which has lubricity itself, and is resistant to wear and oxidation at high temperatures.
The filling elevation of the foam light soil with different strengths shall be constructed in strict accordance with the design requirements. The anti-seepage geomembrane on the top of the foam light soil subgrade shall be laid under the metal mesh,
Risk aversion plunged on the positive news of the Russia-Ukraine talks. After several days of rising oil prices, the price of precious metals continued to fall. Domestic futures markets remain stable for the time being.Back in international markets,
Commodity prices are on track for their biggest rally in more than a century, while fixed-income assets have seen their longest run of outflows as the war in Ukraine adds to inflationary pressures in the global economy emerging from the coronavirus l
GH4049 is a nickel-based superalloy, which is an age-hardening alloy. The corresponding grade is GH49. Its nickel content is about 70%.
The market price of freshwater eel aquarium Eel contains a lot of nutrients, high vitamin content, can quickly restore human energy. Eel skin and fish contain a large amount of collagen, which can play a role in
The composition of titanium alloy TC4 material is Ti-6Al-4V, which belongs to (α+β) type titanium alloy and has good comprehensive mechanical and mechanical properties.
According to official French data, there were 69,190 new confirmed cases in a single day in France on the 9th, an increase of 19.9% compared with the same period last week; 93,050 new confirmed cases in a single day in France on the 8th, an increase
What type of glass is used for the wallsof commercial buildings? The interior walls of many commercialbuildings are made of glass to make the office look fashionable. Somehomeowners also like to use glass walls to make their houses look more eleganta
Will the imminent release date of theIPhone13 affect people awareness of replacing their old phone phone parts? Now that we’re officially in September,Apple fall product launches are closer than ever. This year, we expect Apple tointroduce the iPhone
Althoughthe era of full-screen has arrived, due to the existence of the front cameramakes the screen can not be displayed in full, cell phone manufacturers have tomake a variety of holes in the screen. With the advancement of technology, theunder-scr