4.Simulation shows that the inhomogeneity of electric field reduces the oscillations in photodetachment cross section and its corresponding modulation function.
5.Use high speed oscillation cobbra , ensure all parts of products have same strength during oscillation ,prolong tester lifespan, decline failure rate.
7.With cellulose hydrolyte as raw material to ferment citric acid by Aspergillus niger at constant temperature and under oscillation temperature were discussed and compared.