1. Dangane da hanyoyin fitar da najasa, bandakuna sun kasu kashi hudu ne: Flush type, siphon flush type, siphon jet type, da siphon vortex type.(1) Wanke bayan gida: Flushing bandaki shine mafi al'ada kuma sanannen hanyar zubar da ruwa a tsakar gida zuwa ƙananan bayan gida a China.Ka'idarsa ita ce amfani da karfi o...
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