著名
发表于 2025-3-28 15:23:06
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Generic-Drug
发表于 2025-3-28 18:59:44
Technology and Business of HPHT Treatment,s is made on the description of design of high pressure cell and the methods of measurement of pressure and temperature during HPHT treatment. The preparatory procedures the diamonds undergo before HPHT annealing are discussed in detail. These procedures comprise selection of diamonds, their pre-sha