Ana ba da shawarar maye gurbin matatun iska sau ɗaya a shekara ko 10000-15000 km. Matsayin tacewa na kwandishan shine: 1, don samar da iska mai kyau a cikin mota; 2, adsorption na danshi da abubuwa masu cutarwa a cikin iska; 3, kiyaye iska mai tsabta ba zai haifar da kwayoyin cuta ba, don tabbatar d......
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