Komawa a ƙarshen 1800s, William Pate ya ƙirƙira kuma ya mallaka kwalban hakori guda 24. Kafar hakori 24 ya kasance da ka'idar masana'antar har zuwa a shekarun 1930s.
Bayan fito da injunan atomatik, an saka hula a cikin tiyo ta atomatik, amma a ƙarshe ana samun sauƙin toshe injin din na atomatik a cikin kwalban hakoran hakori 21.
Be giya ya ƙunshi adadin carbon dioxide na carbon dioxide, kuma akwai wasu buƙatu na yau da kullun don hula, ɗaya shine kyakkyawar hatimi, ɗayan kuma shine a sami wani matakin gaba ɗaya, wanda ake magana a kai a matsayin hula mai ƙarfi. Wannan yana nufin cewa yawan puffukan da aka yi a cikin kowane hula ya zama gwargwado ga yankin saman rufewar kowane pleat na iya zama mafi yawan zaɓaɓɓen zaɓi don biyan waɗannan buƙatun guda biyu.
Wani kuma wani dalilin da yasa adadin sayaniya a filin shine 21 yana da alaƙa da murfin kwalban. Be giya ya ƙunshi gas mai yawa, don haka idan an buɗe shi mara kyau, yana da sauƙin cutar da mutane. Bayan kirkirar Butterned Buɗewar Buɗe kwalban, kuma ta hanyar da ya ƙaddara cewa mafi sauki ne kuma mafi sauki ne mafi sauki da aminci.
Lokaci: Nuwamba-02-2023