The crystal structure of tris(hydroxymethyl)methylammonium di-hydrogen phosphate(TAMP) has been determined by X-ray str......

三合一地坪是由砂垫层、普通砖层和水泥砂浆面层组成的地坪。这种地坪发源于喜爱水泥地坪的用户,他们自发地在原有砖地坪上抹1:2.......

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