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From rocket engines to all kinds of maritime hair, have countries been smashed “card necks”? This is a big proposition and a small proposition. First of all, let’s talk about the Long March. As we all know, the Long March 9 carrier rocket is a new generation of heavy rockets being developed in China. It is a “sci-fi level” and will be used for deep space exploration, manned moon landing and fire, space infrastructure construction, etc. First flight between 2028…

The near-anti-aircraft is a short-range defensive weapon. It is mainly used to intercept anti-ship missiles and rockets, missiles or aircraft that attack our ships. It can also shoot at sea targets. It is the last barrier of military defense. Therefore, it is necessary to kill and completely destroy the weapons and equipment. Otherwise, they will still cause damage to our army by virtue of superior inertia and kinetic energy. Based on this situation, it is necessary to use the most…

In recent years, the accuracy requirements of machine tools for machine tool processing have been continuously improved with the continuous development of China’s manufacturing industry. Among them, the precision requirements of wire cutting machine tools are the most urgent. In the online cutting industry, the mainstream “medium wire” is widely used in the fields of mold making, precision small parts, special materials, cams, forming tools and sample processing, because this machine is used to process certain parts. This not only…

Tungsten disulfide is the smoothest new solid lubricant in the current thousands of materials. It has been widely used in the automotive industry, and the benefits to the car are numerous. Tungsten disulfide is a layered crystal structure with excellent lubricity, very low friction coefficient, dynamic friction coefficient of 0.030, static friction coefficient of 0.070, coated on the surface of automotive parts, which can greatly reduce wear, bite, etc. Or reduce the problems of equipment maintenance and maintenance caused by…

There must be a knife in the engraving, and the engraving knife is an extremely important tool for engraving the seal. For the primary printing friends, the tungsten steel knives can be said to be more suitable for quick start “knife pen”. It can be your partner on the road, accompanying you and growing up with you. For the old Indian friends, it is like an old friend. Of course, I believe that the Indian friends also know that the…

It is well known that tungsten (W) is the purest metal with the highest melting point in the world (meaning it is the most difficult to melt), and its melting point is 3156.85 Kelvin (3430 ° C). At present, the most refractory material in the world is a powder mixture of bismuth-containing carbides and nitrides, which has a melting point of 4400 Kelvin (4126.85 ° C). This was synthesized a few days ago by Russian Far Eastern Federal University and…

Technology products such as smartphones, electric cars, big-screen TVs, and green energy power generation rely on a range of chemical elements that most people have never heard of. Until the end of the 20th century, people were only curious about these high-tech products. But nowadays, I feel that it is uncomfortable to find out which one is missing. This also reflects from the side that these chemical elements are indispensable. Because, in fact, a single mobile phone contains more than…

The Boeing 787 “Dream Window” does not have a visor, but it can change the transmittance. What is similar to this is the tungsten oxide electrochromic film. The porthole of the Boeing 787 has no visor, but it can change the transparency! You only need to press the button, the porthole will become a “chameleon” until it is completely darkened! Of course, the captain can also dim directly from the cockpit when the night falls. In addition, because the color…