PVCʩҪ
PVCҪָ̎ˌO(sh)ʩF(xin)cⲿh(hun)x_ʹʩF(xin)ɞһ]ĿgȡĴʩøNwćøNͰĘ(gu)ɵľSowPVCʩʩI(y)ȫoxһЩ|(zh)PVCʩôͺװl(f)
Ҫ1Ѕ^(q)Ҫ·εĹؑO(sh)ø߶ȲС2.5mķ];2һ·εĹؑO(sh)ø߶ȲС1.8mķ];3Թ̡(wn)^ʩ˜ʇ_ M10ˮɰ{MU10퓎ruu0.5*0.5ĻA(ch)L(wn); FƤ 1.82ʩ̎ͿI(y)Qȫ|(zh)ʩZ_l(f)Ŀ̘I(y)VNͿV档
PVCO(sh)ÑP(gun)˜ʼҎ(gu)
PVCʩꮅc֮g㕽ƽֱҪһlֱ;c岻пp϶ڈⲻܿҊ(ni)ʩؾO(sh)üt߸ðȫFҹgʾʩҪʩO(sh)ÑP(gun)˜ʼҎ(gu)Ҫ
1.PVCʩʩI(y)ʩF(xin)܇Bm(x)O(sh)ÇMзoԹ(wn)坍^oyNyͿ_{ˮ
2.·PVCܾoˮ̇x{ɫĊAо䓰(Ȟ50mm)PVC(Ȟ20mm)鷽ЙM߅ɫɫ2.2mg3m;_O(sh)ûĉKKwҎ(gu)ߴԔҊֵĈDֹʹôu;_ˢSgͨȫRyRy200mm150mmAб45Aбָ܇v@־G̡U̇IJҎ(gu)DеP(gun)DҪ