The sun visor can dim the future "Starlink" satellites

Space will use sun visors to dim the "Starlink" satellites and mitigate the risk of light pollution.…

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What is Magnéli Ti4O7 used for?

Chile's government is considering phasing in a proposed ban on glacial mining to limit projects high in the Andes by some big copper companies. Chile's constitutional assembly has approved a proposal to ban mining in glaciers, protected areas, and ar…

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The Effect of Superplasticizer

Adding high-efficient water reducing agent is the most direct and effective means to adjust and optimize the ratio of concrete and improve and strengthen the properties of concrete, which can meet the requirements of most concrete construction at pre…

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