Ukukhethwa kwezinto ezibonakalayo kanye nezici zokusebenza kwama-valve ensimbi engagqwali
i-valve yensimbi engenasici iwuhlobo lwe-valve eyenziwe ngezinto zensimbi engagqwali, ngenxa yokumelana kwayo okuhle kakhulu nokugqwala, amandla okushisa aphezulu nokumelana ne-oxidation, esetshenziswa kabanzi ku-petroleum, amakhemikhali, i-metallurgy, ukwakhiwa nezinye izimboni. Th...
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