Chii chinonzi inch:
Inchi (“) inzvimbo inowanzoshandiswa yekuyera muAmerican system, senge mapaipi, mavharuvhu, maflange, magokora, pombi, matei, nezvimwewo. Semuyenzaniso, saizi ye10″.
Shoko rokuti inchi (rakadimburirwa se“mukati.”) muchiDutch pakutanga raireva chigunwe chikuru, uye inchi kureba kwechikamu chimwe chechigunwe chikuru.Chokwadi, kureba kwechigunwe chikuru chemunhu kunogona kusiyana.Muzana ramakore rechi 14, King Edward II weEngland akabudisa “inji yepamutemo yakajairika.”Tsanangudzo yaro yaive: kureba kwezviyo zvitatu zvakakura zvebhari, zvakaiswa kumagumo.
Kazhinji, 1″=2.54cm=25.4mm.
Chii chinonzi DN:
DN inzvimbo inowanzoshandiswa yekuyera kuChina neEurope, uye inoshandiswa kuratidza zvakatemwa zvepombi, mavharuvhu, flanges, fittings, pombi, nezvimwewo, seDN250.
DN inoreva dhayamita rezita repombi (inozivikanwawo sezita rezita).Ndokumbira utarise kuti iyi haisi iyo dhayamita yekunze kana dhayamita yemukati, asi avhareji yemadhayamita maviri, anozivikanwa seanoreva mukati medhayamita.
Chii chinonzi Φ:
Φ chiyereso chakajairwa chinoshandiswa kuratidza dhayamita rekunze repombi, mabhende, mbariro dzakatenderedzwa, uye zvimwe zvinhu, uye inogona zvakare kushandiswa kureva dhayamita pachayo, senge Φ609.6mm iyo inoreva dhayamita rekunze re609.6 mm.
Nguva yekutumira: Mar-24-2023
