Chii chinonzi "inch": Inch (") chikamu chinowanzoitika cheAmerican system, senge pombi dzesimbi, makavha menduru, mapapu, mateki, etc., sekuti soc., sekuti soketi ndeyegumi".
Inches (inch, yakagurwa senge in. Ehe, kureba kwegunwe remunhu zvakare kwakasiyana. Muzana ramakore rechi 14, King Edward II akapa "standard yemutemo inch".
Zvinotaurwa kuti kureba kweiyo matatu makuru makuru akasarudzwa kubva pakati pekona yebhari uye yakarongedzwa mumutsara ndeimwe inch.
Kazhinji 1 "= 2,54cm = 25.4mm
Chii chinonzi Dn: DN chinhu chinowanzoshandiswa chinoshandiswa kusarudzika muChinese uye European Systems. Iyo zvakare inonzi yekuzivisa mapepa, mavharuvhu, maficha, pombi yakakodzera uye mapapipi, akadai saDN250.
DN inoreva zita rekuti pombi (zvakare inozivikanwa sezita rezita), ichi hachisi chinhu chekunze kana dhayamu yokunze, iyo yemukati mehudyu, inonzi avhareji yemukati dhayamita.
Chii chinonzi φ: Izvo zvinogona zvakare kutaurwa kuve dhaya. Semuenzaniso, φ609.6mm zvinoreva kune yekunze diameter ye609.6mm.
Zvino zvatakaratidza kuti izvi zvikamu zvitatu zvinomiririrei, chii chinobatana pakati pavo?
Chekutanga pane zvese, "Zvinoreva"
Semuenzaniso: Kana pombi yesimbi iri dn600, uye iyo mbiya imwecheteyo yakanyorwa nemasendimita, inova 24 ". Pane here kubatana pakati pezviviri izvi?
Mhinduro ndeyekuti hongu! Iyo general inch ndiko kuwanda kwakananga kweiyo nhamba makumi maviri neshanu, iyo yakaenzana neDN, yakadai se1 "* 25 = DN25 2" * 25 = 50 4 "* 25 = DN100 uye zvichingodaro.
Ehezve, kunewo akasiyana, akadai se3 "* 25 = makumi manomwe neshanu, uye mamwe masendimita kana 1-16" 3-16 "3-16
1/2 (= DN15 3/4 "= DN20 1-1 / 4" = DN32 1-1 / 2 "= DN40 2-1 / 2" = DN90
Kutumira Nguva: Mar-10-2022
