VSWR,Return Loss,Insertion Loss,S参数（S11,S12,S21,S22）都是什么?

VSWR,Return Loss,Insertion Loss,S参数（S11,S12,S21,S22）都是什么? 英语翻译Fig.12 shows the simulation results for 45º and -45º dual-polarized array antennas with VSWR and return loss of 1.299 and -17.72 dB respectively at the resonant frequency.Again,this proves that the combination of more patches in Reconciliation of Income (Loss) per Books With Income per Return请问该怎么翻译呢? cheer the soliders' safe return from Iraq spent the day mourning the loss ins是什么意思 ins是什么意思 ins是什么 INS是什么 ins是什么? INS是什么 ins是什么意思 INS是什么意思 INS是什么? return return return return return