Amathemba emakethe ye-valve yebhola: izitayela zentuthuko namathuba
I-valve yebhola njengohlobo oluvamile lwe-valve, emikhakheni eminingi inezinhlobonhlobo zezicelo. Lesi sihloko sizocubungula amathemba emakethe yama-valve ebhola kuwe, sixoxe ngezitayela zokuthuthuka namathuba embonini yama-valve ebhola, futhi sikusize ube ngcono...
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