1 . The stability of a dynamic dilution system for Unsymmetric dimethylhydrazine is studied by spectrophotometric method.

采用分光光度法研究了偏二甲肼动态配气系统的稳定性.

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2 . Abstract : Powder core has high saturation flux density and excellent motion linearity of DC bias.

磁粉心具有较高的饱和磁通密度和较好的直流偏磁动态线性.

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