Lub tshuab ntim khoom ; 20-100 hnab / min Qhov rau qhov zoo ntawm qhov qub txeeg qub teg zoo yog pom Kev ntim khoom sib txawv, kev siv dav ntawm cov khoom Nws yog tsim rau kev ntim tsis siv neeg ntawm granular, sawb, flake, thaiv, pob, hmoov thiab lwm yam khoom. Tag nrho servo lub cev muaj zog tswj yog siab heev ...
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