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Cov foob pob hluav taws xob yog dab tsi?
Cov tshuab fais fab uas muaj lub qag tig, xws li cov twj tso kua mis thiab cov compressors, feem ntau hu ua "cov tshuab tig." Cov foob pob hluav taws xob yog ib hom kev ntim khoom ntsia rau ntawm lub qag xa hluav taws xob ntawm lub tshuab tig. Lawv siv rau hauv ntau yam kev siv xws li tsheb,...Nyeem ntxiv
