Kev faib tawm los ntawm daim ntawv thov
Cov twj tua hluav taws tuaj yeem muab faib ua ob hom: Cov twj tua hluav taws thiab tua hluav taws dej. Cov qub yog feem ntau siv rau kev tua neeg, thaum lub tom kawg yog siv rau cov dej hluav taws.
Kev faib tawm los ntawm kev ua haujlwm
Cov twj tua hluav taws tuaj yeem ua rau ntau hom, suav nrog submersible twj, centrifugal twj, thiab diesel hluav taws twj tso kua mis. Xaiv cov twj tso kua mis tsim nyog raws koj cov kev xav tau tshwj xeeb.