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  • Is the house made of lightweight concrete earthquake resistant?

    Is the house made of lightweight concrete earthquake resistant?

    Aircrete can be used for foundations. It is light, hardens overnight, and continues to harden over time. It is easy to mold and shape using normal wood-shaping tools. Aircrete mostly consists of cement, water, and foam, although other ma...
  • The main application and preparation of bismuth

    The main application and preparation of bismuth

    Bismuth is the element symbol Bi, atomic number 83, atomic weight 208.98, peripheral electrical configuration 6S26P3, located in the sixth cycle ⅤA group, covalent radius 152pm, ionic radius Bi3+120pm, Bi5+74pm, first ionization energy 70...
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