Lub teeb yuag qhob ntxiv | Kev Ua Haujlwm Siab Ua Foaming Cov Neeg Sawv Cev Rau Cov Khoom Siv Ntawm Tes
Nres nkim cement: Cov dej txo cov khoom sib xyaw rau cov qhoob qhob uas koj siv tsis ncaj ncees lawm
Cov 40% Permeability Poob Koj yuav tsis quav ntsej Ntawm no yog tus lej uas yuav tsum ua rau koj tsis txhob sib xyaw: a 0.05 txo cov dej-cement piv tuaj yeem txiav cov pob zeb ua kom dhau lawm 40%. Qhov ntawd tsis yog ib qho ...