Dab tsi yog txheej txheem xaws ntawm lub hnab tuj?
Lub hnab tuj yog lub hnab ntim khoom rau cov khoom loj. Nws yog tsuas yog siv rau kev ntim cov hmoov, granular, thaiv cov khoom thiab cov khoom ua kua xws li khoom noj, khoom siv hauv tsev, tshuaj, thiab tshuaj. Nws ua lub luag haujlwm tseem ceeb hauv kev thauj mus los. Vim yog cov txheej txheem tsim khoom tshwj xeeb ntawm lub hnab ntim khoom, muaj cov kev xav tau meej rau kev nqa cov khoom hnyav, yog li lub hnab ntim khoom sib txuam yuav tsum raug xaiv thaum ntim cov khoom.
Cov kev xav tau siab dua yog muab tso rau pem hauv ntej rau kev tsim thiab tsim cov txheej txheem ntawm cov thawv ntim khoom. Qee zaum tsuas yog ib qho me me tuaj yeem ua rau muaj kev hloov pauv loj thiab txhim kho. Piv txwv li, thaum lub sij hawm sewing txheej txheem ntawm lub hnab ntim khoom, cov npoo sab yog superimposed rau pem hauv ntej thiab nraub qaum rau ob zaug, uas tuaj yeem tiv thaiv cov teeb meem ntawm lub seam ntawm lub hnab ntim khoom. Kev xaws ntawm lub hnab ntim khoom muaj feem xyuam rau cov khoom zoo thiab kev siv nyab xeeb, thiab ua lub luag haujlwm tseem ceeb, yog li yuav tsum tau them nyiaj rau nws.