After the pce superplasticizer is added to the cement, the sodium aluminate and sodium carbonate in its main components react rapidly with the gypsum in the cement to form sodium sulfate in the alkaline solution, so that the gypsum loses its original…
More than 300 public aquariums worldwide, and more than 100 have opened since 1990. According to incomplete statistics, aquariums (including those in zoos) attract up to 450 million visitors yearly, with far-reaching economic and educational implicat…
TRDN-2 molecular sieve is a silicon aluminate crystal product with established three-dimensional pore structure, and the pore size of the crystal is 0.9 nm. It is a special molecular sieve for the elimination of N2O from raw gas in cryogenic air sepa…
Researchers at Chalmers University of Technology in Sweden have proposed that a new type of graphene could be used as a special effect material for the production of high-performance electrodes for sodium batteries.…