Imibhobho yentsimbi ye-Spiral idla ngokusetyenziswa kwimibhobho yokuhambisa amanzi edolophini. Ukusetyenziswa kwemibhobho yentsimbi ejikelezayo kwiinkqubo zemibhobho yokuhambisa amanzi ezidolophini lulungiselelo olubanzi lonikezelo lwamanzi ezidolophini, unikezelo lwamanzi, unikezelo lwamanzi, ukuhanjiswa kwamanzi amdaka, ukucocwa kogutyulo, kunye nezinye iinkqubo zemibhobho kunye nezinto zazo ezahlukeneyo ngaphakathi ...
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