交流传输 meaning in English

ac transmission
alternating current transmission
alternating-current transmission

The main research aspects are as follows : the method of ac transport losses measurement in ac applied magnetic field was investigated . upon the analysis of ac loss measurement , a method to measure ac transport losses in ac applied field was proposed by use of double " 8 " shape coils . a programme controlled system was set up to measure ac losses of hts tapes and coils , which can ensure the experiment data needed by theoretical analysis and verification
主要包括：在实验方面，探讨了交流背景磁场下高温超导带材的交流传输损耗的测量问题，通过对交流损耗测量的理论分析，提出了采用双“ 8 ”字形电势引线测量交流背景磁场下高温超导带材交流传输损耗的方法；建立了超导带材短样及线圈交流损耗的电测量系统；从而为交流损耗的研究提供实验数据与理论检验标准。