ʯ\W(eW)ǽپľĽξW(ǾW)ƳɵľWʹõĽپǸεĴСͬ
ǽ僌ӵĽپtʹþ2.0mm4.0mmĽپPVCĽپǾWtʹ⏽3.0mm4.5mmPVC()߅ľtʹñǾWһ̖ľ
ʩʯ\WĕrЩ|Ҫ
ʯ\Wԇùˮyxԇ̎ԇӵ摪ƽȥɢ_ԇֱ݆ҪȣQԇ|ʴ_10gͬryԇӺˮʣOĤMйˮʽӋܶȡ
B(ti)ʯ\W䑪ùˇøߏ\䓽zɲͬҎ(gu)ľλ\\Ӄȳʯ^ĽY
ʯ\WzoγߴǷMҪ߶Sƫ10%߶Sƫ3%L߶Sƫ3%ƽȸ߲3cm
ʯ\WǽپľĽξW(ǾW)ƳɵľW,ʹõĽپǸεĴСͬ
ǽ僌ӵĽپ,tʹþ2.0mm4.0mmĽپ,PVCĽپǾW,tʹ⏽3.0mm4.0mmPVC().߅ľtʹñǾWһ̖ľ
ʯ\Wʩ|z鑪Mзȡӣÿ150m2ȡһzcȡyܶƽֵСOӋֵ˜ʲ0.1g/cm3ӱС20MrϸʲС90%ϸܶȲõOӋֵ95%
ʯ\WP헣ϣ܌