The working principle, the method to calculate the ratiooftransformation and algorithm of filtering capacity are also studied in this paper.
本文分析了其工作原理，变压器变比的确定方法，滤波能力计算方法。
2
The RE fluoride can be prepared directly from oxalate by adding hydrofluoric acid . The ratiooftransformation and recovery is high if the hydrofluoric acid is added by 120% theoretical amounts.
稀土草酸盐中直接加氢氟酸置换生成氟化稀土，选择加入120%理论量的氢氟酸有较高的转化率和回收率。
3
Through analyzing the basic principle of QJ35 type transformation-ratio bridge, the paper discusses the correct Assay method for this bridge under the existing test equipment condition.