Tiirarka hydraululic waa qayb muhiim ah oo ka mid ah nidaamyada hydraulic. Waxay ku qaadaan dareeraha hydralic cadaadis sare si ay u xakameeyaan mashiinka biyo-galka, sida qodayaasha, cagaar, iyo bulldozers. Si kastaba ha noqotee, in si sax ah loo shaqeeyo, tuubooyinka khadadka hydralic waxay u baahan tahay in lagu rakibo isku xirayaasha saxda ah ama kuwa ku rakiban. Artigan Artti
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