Department of Astronomy;
Yunnan University;
and Key Laboratory of Astroparticle Physics of Yunnan Province;
Kunming 650091;
China;
Max-Planck-Institut fur Radioastronomie;
Auf dem Hugel 69;
53121 Bonn;
Germany;
National Astronomical Observatories;
Chinese Academy of Sciences;
Beijing 100101;
China;
CAS Key Laboratory of FAST;
National Astronomical Observatories;
Chinese Academy of Sciences;
Beijing 100101;
China;
ISM; supernova remnants; ISM; magnetic fields; polarization; techniques; polarimetric;