3/11/ 2001 - Thang   Hien nay chung toi dang co y dinh chuyen doi he thong quat oxy bang he thong may thoi khi dang ejector, toi muon co duoc su chi dan va so sanh cac mat uu va nhuoc diem cua 2 phuong phap tren. 

Qua tim hieu, he thong thoi khi dang ejector co nhung han che nhat dinh, dac biet la khi troi mua lon va mua keo dai - kha nang giai quyet phan tang nuoc trong truong hop khan cap nay kho khan. Khi tom lon tu thang thu 3 tro di he thong nao cung doi hoi kha nang va cac yeu cau cao, phai xet ve moi yeu to. Do vay vao mua kho, ban co the su dung cho tom 1 thang den 2 thang tuoi, mua mua phai xem xet lai.   

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