Kemgbe 1950s, ndị injinia ejirila geomembrane mee nke ọma.Ojiji nke geomembranes, nke a na-akpọkwa na-agbanwe akpụkpọ anụ (FMLs), abawanyela n'ihi nchegbu na-eto eto maka mmetọ nke akụrụngwa mmiri bara uru.Okirikiri porous omenala, dị ka konti, admi...
GỤKWUO