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The effects of boron and silicon elements: significantly reduce the melting point of the alloy, expand the temperature range of the solid-liquid line, and form a low-melting eutectic…
Nickel-based superalloys are the most widely used. The main reason is that, one is that more alloying elements can be dissolved in the nickel-based alloy, and it can maintain good structural stability…
The WTO expects that global trade will continue to rebound this year and next. At present, factors such as the regional differences in trade recovery and the delayed vaccination of the new crown vaccine in the world, especially in poor countries, wil…
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