According to the study of determination of molybdenum in compound micro-fertilizer by means of mix indicator technique, it was found that change of terminal colour of titration is clear.
研究了混合指示剂法对复合微肥中钼的测定，测定终点颜色变化明显。
2
Every part of the compound ultrasonic torsional vibration horn is equivalent to a four -terminal network in this paper. Simplify the networks by multi-plying the matrices.