XRD图谱解释？However,??thecrystallite size of meso-ZSM-5 is smaller than that of ZSM-5 dueto slight line broadening of the diffraction peaks.是判断哪一个峰，还是所有的峰？为什么8度左右的峰比23度的峰还强，我自己制备的不是这样，会有什么影响吗？查看更多3个回答 . 14人已关注
100 ml H2O2 (15 per cent w/v)表示何意？如何配制?各位大咖：? ?? ? 今天遇到了一个双氧水的浓度表示方法，请大家多多指教？For determination of particle size of the soil for selecting the soil type, 10.0 g air-dried soil are reacted with 100 ml H2O2 (15 per cent w/v) for 15 hours, then heated until CO2 evolution is complete. Afterwards the suspension is left to stand overnight with 25 ml 0.4 N Na4P2O7, then water is added to make it up to 250 ml and the solution is sieved through a mesh of 0.2 mm width. The portion > 0.2 mm is fractionated further by sieving. The smaller particles (silty fractions) are fractionated by homogenous partitioning of the particles in the aqueous medium, which is made up to 1000 ml with water in an elutriating cylinder.文中： 100 ml H2O2 (15 per cent w/v)表示何意？如何配制？或者说这种单位表示法起源于哪里？ 请各位不吝指教！这是一份1981年的标准中的表示方法查看更多2个回答 . 15人已关注
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