①Mapombi anopfungaira uye anopisa emafuta anotsemuka uye kudonhedzwa, injini bhuroka yakakoromoka uye yakakweshwa,Kuora kwemupendero wepepa rinoomesa uye kubuda kwemhepo kwenzvimbo yekuvharisa kwevhavha yekupedzisira, kugadziriswa kwepurasitiki yekuumba mold, nezvimwewo; ②Ndege, flange, hydraulic masisitimu, majoini akarukwa, e...
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