Internal stress stress transparent material supply of propylene glycol, the main stress is perpendicular to the tensile direction n is large, parallel to the main tensile stress direction n is small (the reader carefully ponder why?). Overall, the denser particles of the material, the greater the refractive index. Isomer of the isomeric material, the refractive index of a high temperature polymorph lower Jinan propylene glycol, the presence of high refractive index of low-temperature crystalline form. For example, at room temperature, quartz glass, n = 1.46, quartz crystal n = 1.55; high temperature tridymite n = 1.47; n = 1.49 cristobalite glycol, As ordinary soda-lime silicate glass, n = 1.51 , which is smaller than the refractive index of silica. Effective measures to improve the refractive index of glass is the incorporation of lead and barium oxide. For example, containing 90% (by volume) of lead oxide lead glass n = 2.1. [1] by Yanzhou Mining Group Co., East China University of shared fifteen National High Technology Research and Development Program (863 Program) a major issue of new coal-water slurry gasification technology in Shandong Lunan building multi-nozzle-mounted water slurry gasification Technical plant and ancillary works daily processing 1150 tons of coal using two multi-nozzle-mounted water slurry gasifier (4.0MPa) supporting the production of 240,000 tons of methanol 71.8MW power generation multi-nozzle-mounted water slurry gasification technology including coal slurry preparation step of the multi-nozzle-mounted water slurry gasification and gas purification process including initial slag treatment process technology is characterized by multi-nozzle mounted pre-film entrained flow gasifier long life and efficient cross-flow gasification nozzle washing water distribution the composite bed high temperature gas cooled gas purification washing equipment grading preliminary purification process separate direct evaporative heat exchange and thermal water treatment containing slag recovery process has been a series of patents and utility model patents is a coal gasification technology is completely independent intellectual property rights in Jinan propylene glycol, propylene glycol, Qingdao, Jinan provided by Xiang Xiang dry chemical dry chemical co. Jinan Cheung Dry Chemical Co. (www.xiangqianhuagong.com) (www.dilunyierchun.com) strong, credible, in Jinan, Shandong alcohol industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Xiang dry chemical into the brilliant and you work for a better future! You can also access (www.dilunyierchun.com/supply_details_41829795.html), for more information about the company.