rapid fluctuation
2.On the Intermittent Low Ebb with Constant Rapid Increase——A Study Report of the Increase and Fluctuation of Hongkong Economy in 1990s
3.Major symptom of depression was depressed, generally with history of affective disorders,rapid episode and development,and the course was less than 6 months, fluctuation showed in cognitive level. Patients with depression could not made relatively active reaction on happy environment or atmosphere.
4.With the rapid development of national economy, there are more and more industrial devices being used in industry, such ac arc furnaces and rolling mills. These loads, which have the electric characteristics of asymmetry or impact, bring so much power quality problems as low power factor, voltage fluctuation and flicker, three phase voltage and current unbalanced, and etc.
