Ithuluzi lokugcina, okwaziwa nge-thuluzi lokugcina noma ithuluzi lokugcina, kuyinto isipringi esiqondile esithandwa kakhulu ukuqinisekisa ukugcina okwesibili.
Kuyatholakala ukuthi kuyakhiwa ngemithombo yezinkomba ezivamile (njengoba isitili sesipringi), futhi uma akukho incwadi, izinkomba zesipringi sokugcina ziyathambekela ngokugcina ngaphakathi kwezinye. Isenzo esikhulu sesipringi sokugcina kuyokwenza ukusebenzisa isifuba sokugcina (ukugcina) emva kokugqoka, okwenza kube nokusebenzisa ukuqinisekisa ukuziphatha kwamathuluzi, ukugcina umsuka, ukukhokhela ubukhulu bomthetho, njll. Kukhona izinhlobo eziningi zezinkomba zokugcina, kuhlanganisa izinkomba zasemanzini, izinkomba ezimbalwa, izinkomba zaseBhritani, izinkomba zaseJeremani, izinkomba zasezinye, izinkomba zase-duckbill, njll. Lokhu "izinkomba" zisebenzisa isipho sokugcina sokugcina. Okuningi kwezinkomba zokugcina kuyasebenza phansi kwesikhathi esisodwa sokugcina, futhi uma akukho incwadi, le nkampani yokugcina ikhetha ukusuka kwezinkomba zokugcina ekhulwini elilodwa. Isasazo sokugcina sokugcina kuyisinyathelo esingaphezulu kwezinkomba zokugcina. Isasazo sokusebenza sesipringi sokugcina kuyalingana nalokho kwezinkomba zokugcina. Isipringi sokugcina siyasebenza ngaphansi kwesikhathi esisodwa uma kushaywa, uma kushaywa, isipringi sokugcina siyasebenza ngaphansi kwesikhathi esisodwa uma kushaywa noma kushaywa, ekufuna ukushayela abadala ababili futhi ukulondoloza nokusebenzisa isifuba.