Chii chinonzi "inch": Inch (“) chinhu chinowanzo shandiswa pakugadzirisa zvinhu zveAmerica, zvakaita semapaipi esimbi, mavharuvhu, maflange, magokora, mapombi, matinji, nezvimwewo, zvakaita se10″.
Inchies (inch, yakapfupikiswa se in.) zvinoreva chigunwe chikuru muchiDutch, uye inchi imwe kureba kwechigunwe chikuru. Ehe, kureba kwechigunwe chikuru chemunhu kwakasiyanawo. Muzana remakore rechi14, Mambo Edward II vakaburitsa "standard legal inch".
Zvinotaurwa kuti kureba kwetsanga nhatu hombe dzakasarudzwa kubva pakati pehura yebhari uye dzakarongwa mumutsara i 1 inches.
Kazhinji 1″=2.54cm=25.4mm
Chii chinonzi DN: DN iyuniti yekuongorora inoshandiswa zvakanyanya mumasisitimu ekuChina nekuEurope. Iyuniti yekuongororawo mapaipi, mavharuvhu, maflange, mafitting emapaipi nemapombi, akadai seDN250.
DN inoreva dhayamita yepombi (inozivikanwawo sedhayamita yezita), cherechedza: iyi haisi dhayamita yekunze kana dhayamita yemukati, iavhareji yedhayamita yekunze nedhayamita yemukati, inonzi avhareji yedhayamita yemukati.
Chii chinonzi Φ: Φ chinhu chinoreva dhayamita yekunze yemapaipi, magokora, simbi yakatenderera nezvimwe zvinhu. Inogonawo kunzi dhayamita. Semuenzaniso, Φ609.6mm inoreva dhayamita yekunze ye609.6mm.
Zvino zvatava kuziva kuti zvikamu zvitatu izvi zvinomiririrei, chii chiri kubatana pakati pazvo?
Chekutanga, "Zvinoreva "DN" zvakafanana neDN, zvinoreva dhayamita yezita, zvichiratidza saizi yechinhu ichi, uye Φ ndeyekubatanidza zviviri izvi.
Semuenzaniso: kana pombi yesimbi iri DN600, uye pombi yesimbi imwecheteyo iine ma inches, inova 24″. Pane hukama pakati pezviviri izvi here?
Mhinduro ndeyekuti hongu! Inji yakajairika ihuwandu hwakananga hwenhamba yese ne25, iyo yakaenzana neDN, zvakaita se 1″*25=DN25 2″*25=50 4″*25=DN100 nezvimwewo.
Ehezve, kunewo akasiyana, akadai se3″*25=75, akatenderedzwa kuDN80 iri pedyo, uye mamwe mainji ane masemicolons kana mapoinzi edecimal, akadai se1/2″ 3/4″ 1-1/4″ 1-1/2″ 2-1 /2″ 3-1/2″, nezvimwewo, izvi hazvigone kuverengerwa saizvozvo, asi kuverenga kwacho kwakafanana, chaizvoizvo kukosha kwakatarwa:
1/2″=DN15 3/4″=DN20 1-1/4″=DN32 1-1/2″=DN40 2-1/2″=DN65 3-1/2″=DN90
Nguva yekutumira: Kurume-10-2022
