Ƙirƙirar wani nau'i mai mahimmanci na wannan jumla A cikin kogon kogon, ɗakin Torricellian wani ɗakin kogon ne tare da sararin samaniya a sama da ruwa a ƙasa da matsa lamba na yanayi.
Tabbas, wani nau'i mai rikitarwa na jumla shine "A cikin kogon kogon, ɗakin Torricellian shine ɗakin kogon da ke cike da ruwa a ƙasa da matsa lamba na yanayi wanda aka kafa lokacin da matakin ruwa ya sauka kuma babu wata hanyar samun iska a cikin ɗakin. "