Duba zuwa sashi na ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda sashi yake: Passage: Abubuwan da aka kera sun ƙunshi tukunyar terracotta kimanin 130 mm (5 in) mai tsayi (tare da bakin inci ɗaya da rabi) wanda ke ɗauke da silinda da aka yi da takardar jan ƙarfe, wanda ke ɗauke da sandar ƙarfe guda ɗaya. A saman, sandar ƙarfe tana keɓe daga jan ƙarfe ta hanyar bitumen, tare da matosai ko toshewa, kuma duka sandar da silinda suna dacewa da kyau a cikin buɗewar kwalbar. Silinda na jan ƙarfe ba shi da ruwa, don haka idan an cika kwalbar da ruwa, wannan zai kewaye sandar ƙarfe kuma. Abubuwan da aka kera sun kasance a cikin yanayi kuma sun sha wahala. Tambaya: Menene abu wanda ba shi da ruwa?
silinda na jan ƙarfe