I-Sub ye-Drop Ball ejikelezayo emininzi

I-Multiple Drop Ball Circulating Sub sisixhobo esisebenza kakuhle kakhulu esilungiselelwe imisebenzi yokugrumba ebhekisa kwicala, ethe tye, nekwi-engile ephezulu. Ivumela ukuvulwa nokuvalwa okuphindaphindiweyo kwamazibuko okudlula ukuze kuphuculwe ukusebenza kakuhle kokugrumba, kuncitshiswe iingozi zokulawula imithombo, kwaye kube lula imisebenzi ekhethekileyo efana nolawulo lokujikeleza kwegazi olulahlekileyo kunye nokucoca imisele yamanzi—ngaphandle kokukhubeka.