Negative pressure fan imagwiritsa ntchito mfundo yoziziritsa ya air convection ndi kuponderezedwa koyipa kwa mpweya, mpweya umatulutsidwa kunja komwe kumapangitsa kuti mpweya wamkati utsike, mpweya wamkati umakhala wocheperako, kupanga malo oponderezedwa olakwika, kenako mpweya wakunja, chifukwa cha ai. ..
Werengani zambiri