Lapho izingxenye ze-vacuum, njengama-valve, izicupho, iziqoqi zothuli namaphampu e-vacuum, zixhunywe zodwa, kufanele zizame ukwenza ipayipi lokumpompa libe lifushane, umhlahlandlela wokugeleza wepayipi mkhulu, futhi ububanzi bepayipi ngokuvamile abuncane kunobubanzi bembobo yepompo, lapho...
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