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Mechanical seals yog dab tsi?
Lub tshuab fais fab uas muaj lub tshuab tig, xws li twj thiab compressors, feem ntau hu ua "rotating machines." Mechanical seals yog ib hom kev ntim khoom nruab rau ntawm lub zog xa hluav taws xob ntawm lub tshuab tig. Lawv siv ntau yam kev siv xws li tsheb, ...Nyeem ntxiv
