Xa izinto ezisebenzisa i-vacuum, ezinje ngeevalvu, iitrap, abaqokeleli bothuli kunye neempompo ze-vacuum, zidibene, kufuneka zizame ukwenza umbhobho wokumpompa ube mfutshane, isikhokelo sokuhamba kombhobho sikhulu, kwaye ububanzi bombhobho ngokubanzi abuncinci kunobubanzi bezibuko zempompo, ezi...
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