ʯ\W(wng)SԭϽپķxǣ\z\z\z僸\z\XϽz僸ߠzϡϽzԼܽz(yng)ڲͬh(hun)еʯ\W(wng)Sxòͬ̎k҂Bһʯ\W(wng)SҎ(gu)(gu)ɷxʲô?
1.ʯ\W(wng)SҵҎ(gu)Bʯ\W(wng)SһN�B(ti)W(wng)Y(ji)(gu)ʯ\W(wng)Sи߿gߏȡչԵĵ̼䓽zSPVC䓽z\ÙCеʯ\W(wng)Sʯ\W(wng)Sɵʯ\W(wng)S䡣ʯ\W(wng)Sҵ߅ؾֱһҪھW(wng)ֱpgϲһpgԴ_gϲ䓽zĽ僌ӺPVC僌Ӳܓp
ʯ\W(wng)SҞһγͳa(chn)w߅˰װgɷָL/ȹ(5%)߶ȹ(5%)(ni)ÿ1xøɪĆԪxýMbkw壬߅˰װΪa(chn)MbɾW(wng)䓽zP@`W(wng)߅zxôֽzӏʯ\W(wng)Sď
MԺãӹ\ͱɰO(sh)ӋҪɸNΠ(x)ɽӞ͵̷Π
2.ʯ\W(wng)SҵĮa(chn)ƷҎ(gu)ʯ\W(wng)S\ÙCپĆܾİξW(wng)(ǾW(wng))ƳɵİܾW(wng)0.15-0.5m(0.5m)ʯ\W(wng)SɸּtɆԪ˼ӏʯ\W(wng)S҉|Y(ji)(gu)ďе߅˾xֱİ䓽z
ʯ\W(wng)SҷֽپPVCPEͿӃɂ\õĽپǸ(j)εľ(x)ͬa(chn)Mǽ(jng)W(wng)i߅Ƴʯ\W(wng)SҺZo|