Dab tsi yog qhov tseem ceeb ntawm lub rooj vag? Vim li cas qhov rooj laj kab me me yog li cas?
Lub rooj vag yog ib qho luv luv ntawm txoj kev sib tshooj ntawm txoj kab thiab cov kab noj hniav ua ke.Qhov nyhuv yog ua kom cov lej khiav mus rau hauv cov kab noj hniav thiab sau cov kab noj hniav hauv kev txiav txim.Thaum tib lub sij hawm, thaum twg cov khoom txias thiab sib cog lus, nws tseem xav tau sau rau hauv qee yam ntawm cov khoom siv melting kom lub molding zoo ntawm cov khoom.Qhov zoo ntawm lub qhov rooj kab uas hla tsawg dua shunt inch yog raws li nram no.
Cov khoom siv yaj tuaj yeem los ntawm qhov no, txoj kev sib txhuam cab nce, qhov tshaj tawm yog ceev ceev, cov khoom kub tawm ntawm lub cev tuaj, qhov pom tau tias yuav tsum muaj qhov ncab tuaj.
Cov khoom yog txias thiab kev cog lus, thiab lub sij hawm siv rau melting yog shortened.
Qhov me me pore taub, ceev ceev ceev ceev, muab cov khoom molding hloov.
Nws tuaj yeem siv los sib npaug ntawm cov khoom siv hlau hauv cov diverging channel, thiaj li tias lub yaj yog nyob ze rau cov pwm kab noj hniav tib lub sijhawm.
Qhov seem ntawm lub qhov rooj yog qhov yooj yim kho.