PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒PVDF棒√PVDF棒√（PVDF棒）√PVDF棒√PVDF棒
