baoyu135国产精品免费_成人精品视频一级毛片_亚洲中字无码A∨电影在线观看_国产免费高潮白浆二区三区_免费视频在线观看高清无码_精品无码久久国产2024_亚洲AV无码专区牛牛影院_精品第一国产综合精品aⅴ_午夜大片爽爽爽免费影院_日本在线高清视频

Tungsten alloy multileaf collimator firstly used tungsten alloy leaves to shape structures in 1965 and has improved rapidly to modern day operation in radiotherapy. Tungsten alloy multileaf collimators are now widely used and have become an integral part of any radiotherapy department as they have strong shielding performance against rays while ensuring high accuracy. A pair of tungsten alloy leaves can form a rectangular irradiation field, and multiple pairs of tungsten alloy leaves can be combined to form an irradiation…

Tungsten alloy multileaf collimator is a collimator or beam-limiting device that is made of some individual leaves of tungsten alloy material. Each tungsten alloy leaf is connected by a screw rod and a drive motor to form an irregular field under the control of computer software. And these tungsten alloy leaves can move independently in and out of the path of a radiotherapy beam in order to shape it and vary its intensity. More details, please visit: http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html It has…

Tungsten alloy shield is a very important part in multileaf collimator – a device commonly used in radiation medicine. Tungsten alloy shields are some tungsten alloy leaves having good X-ray shielding properties on the multileaf collimator. More details, please visit: http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html It is reported that the multileaf collimator appeared in 1990 is used to replace the traditional lead block, so that it can effectively improve the accuracy of radiotherapy to reduce the treatment time of patients and the workload of…

Tungsten alloy has become a new type of shaped charge liner material with wide application prospects due to its high melting point, high density, high sound velocity, good ductility, and good machining performance. The components of tungsten alloy material for preparing shaped charge liner material include W-Ni-Fe, W-Ni-Cu, and the like. More details, please visit: http://www.tungsten-alloy.com/en/alloy04.htm Previously, some researchers used W-Ni-Fe alloy shaped charge liner for static penetration tests. The results showed that tungsten alloy shaped charge liner can form…

Tungsten alloy shotgun bullet is small. Generally, there are some spherical projectiles. At that time, from the perspective of density and hardness, lead was considered a suitable material for shotgun bullet. However, shotguns are used for hunting animals. If toxic lead bullets are used, it seems that the hunted prey is not so “safe” for eating. While tungsten alloy is non-toxic, environmentally friendly and pollution-free, so it is developed to replace traditional heavy metal lead as the projectile material. More…

Tungsten alloy armor piercing shell, which consists of a tungsten alloy core encased in a jacket of copper alloy, is a type of ammunition designed to penetrate armor. Such an armor piercing shell is also known as a kinetic energy armor-piercing projectile. It has been reported that the core of the former West Germany’s 105mm armor piercing discarding sabot was made of tungsten alloy containing 95%W-3.4%Ni-1.6%Fe. Its density can reach about 18 g/cm3. More details, please visit: http://www.tungsten-alloy.com/en/alloy04.htm The reason…

Recently, the experts have proposed a preparation method for preparing new yellow tungsten oxide photocatalytic material. The method is easy to operate, easy to obtain raw materials, and easy to popularize in low cost. More details, please visit: http://tungsten-oxide.com/index.html A Preparation Method of New Yellow Tungsten Oxide Photocatalytic Material Step One: Dissolve Na2WO4·H2O2 in deionized water and stir magnetically for 10-30min to obtain a uniform and transparent solution. Step Two: Add HCl to the solution prepared in Step One, and…

Yellow tungsten oxide, namely tungsten trioxide or WO3, is a common semiconductor photocatalytic material. Certainly, there are other common semiconductor photocatalytic materials such as TiO2, ZnO, Fe2O3 and Bi2WO6. Wherein, so far, the most studied material is TiO2. However, due to the shortcomings of TiO2 – wide band gap and low conversion efficiency of visible light, people have begun to improve the light utilization efficiency of photocatalysts from two directions: More details, please visit: http://tungsten-oxide.com/index.html 1. Replace the oxygen element…

As a new energy-saving building material, WO3 electrochromic glass has attracted more and more attention. For example, some experts use a WO3 thin film having nanocrystalline mosaic structure as an electrochromic material, and combine it with NiO to assemble an electrochromic device – an electrochromic glass, with high spectral modulation amplitude. More details, please visit: http://tungsten-oxide.com/index.html Such a smart glass can selectively absorb or reflect external heat radiation and internal heat diffusion under the action of an electric field, reducing…

A yellow tungsten oxide composite film uses amorphous tungsten oxide as a matrix, and the SiO2 nanocrystals are uniformly distributed in the amorphous tungsten oxide. Some experts prepared such a composite film with a spectral modulation amplitude at 633 nm of 46%, a coloring time of 8 s, and a fade time of 4.3 s through the following steps: More details, please visit: http://tungsten-oxide.com/index.html Step One: Ultrasonic disperse 0.3g of SiO2 nanocrystalline powder in 6mL of dimethylformamide to form a…