Vacuum servos ndi gawo lofunikira pamakina ambiri, makamaka m'makampani amagalimoto. Amagwira ntchito yofunikira pakuwonjezera mphamvu, kuwonetsetsa kuti mabuleki akuyenda bwino, komanso chitetezo chonse chagalimoto. Mu bukhuli lathunthu, tiwona momwe ma vacuum servos amagwirira ntchito, discus ...
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