Menene "inch": Inch (") yanki ne na gama gari don tsarin Amurka, irin bututun ƙarfe, bawul, da sauransu, kamar ƙamus shine 10".
Inkees (Inch, a rage kamar yadda yake a cikin.) yana nufin yatsa a cikin Yaren mutanen Holland, kuma inci ɗaya shine tsawon babban yatsa. Tabbas, tsawon babban yatsa shi ma ya bambanta. A ƙarni na 14, King Edward II ya ba da "daidaitaccen halaka".
An bincika cewa tsawon hatsi mafi girma uku da aka zaɓa daga tsakiyar kunnuwa kunnen kunnawa da kuma shirya a jere ɗaya ne inch.
Gabaɗaya 1 "= 2.54cm = 25.4mm
Menene DN: DN yanki ne na musamman da aka saba amfani dashi a cikin tsarin Sinanci da na Turai. Hakanan ana iya amfani da takamaiman bayani don gano bututu, bawuloli, flanges, flanges bututun, kamar DN250.
DN yana nufin diamita na nomanal na bututu (wanda aka sani da diamita na noman), bayanin kula: Wannan ba shine matsakaici na m diamita ba kuma diamita na ciki, da ake kira matsakaicin diamita na ciki.
Mene ne naúrar gaba ɗaya: ɗayan ɗayan ɓangaren yanki ne, wanda ke nufin ƙarshen diamita na bututu, elbows, zagaye karfe da sauran kayan. Hakanan za'a iya ce shi zai zama diamita. Misali, %Tmm yana nufin ƙarshen diamita na 609.6mm.
Yanzu da muka fahimci abin da waɗannan raka'a ukun suna wakilta, menene haɗin tsakanin su?
Da farko dai, "Ma'anar" DN "kusan iri ɗaya ce kamar yadda DN, ana nufin shi mai diamita na noman, kuma φ suna haɗuwa da biyu.
Misali: Idan bututu na karfe shine DN600, kuma Pepe iri ɗaya ana alama tare da inci, ya zama 24 ". Shin akwai wata alaƙa tsakanin su biyun?
Amsar ita ce eh! Janar Inch ne yawa na lamba da 25, wanda daidai yake da DN, kamar 1 "* 25 = DN25 = DN100 da sauransu.
Tabbas, akwai kuma 3 "* 25-14, zagaye zuwa ga semicolons ko kuma wasu inci da yawa, amma da sauransu, da sauransu, kamar yadda aka ƙayyade ƙayyadaddun ƙimar:
1/2 "= DN15 3/4" = DN20 1-1 / 4 "= DN32 1-1 / 2" = DN65 3-1 / 2 "= DN90
Lokacin Post: Mar-10-2022
