Kev hloov pauv hauv av saib xyuas cov qib kua hauv ntau qhov chaw nyob thiab kev lag luam thiab feem ntau txuas nrog lub twj tso kua mis, valve (solenoid valve, hluav taws xob pob valve, thiab lwm yam), lossis lub tswb ceeb toom rau tus neeg siv.Vim muaj ntau yam kev tsim thiab hom, lawv tuaj yeem siv rau ntau yam kev siv.
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