The main problem in the application of nano-ferrofluid sealing magnetic field is how to find a way to estimate the sealing capability.

• 纳米磁性流体密封的应用中最关键的问题是密封能力的确定,其影响因素很多,如纳米磁性流体本身的性质、磁极结构、负载运行过程等。