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I-CDH ye-CDH-600U i-hydraulic ngaphantsi komhlaba yedayimane yedayisi

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Ukutsalela i-Trench ukusika kwakhona indlela enzulu yodonga (i-TRD ye-TRD ifutshane) yahlukile kwindlela exubeneyo yomhlaba (i-SMW). Ngendlela ye-TRD, i-chain izixhobo zifakwe kwicandelo elinde elinde "ukusika iposti" kwaye ifakwe kwindawo enqamlezileyo, ukuhambisa, ukudityaniswa komhlaba kwindawo yoqobo, ukwenzela ukuba kwenziwe i-Daphragm yoLwandlekazi. Le ndlela iqale yaphuhliswa kwi-japan ngo-1994 ngokwenza iindonga zokusika okanye iindonga ze-staphragm, ezisetyenziselwa indawo engaphantsi komhlaba, njl. Indlela ye-TRD ifumana uphuhliso olukhawulezayo, kuba i-TRD yaziswa okokuqala eChina ngo-2009. Kuphela ngonyaka ka-2018, kwiindawo ezizodwa zendlela ezenziwe yi-TRD kwiimitha ezili-1 ze-80 yasekhaya.


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