Vim li cas cov khoom ntawm cov lus qhia ntawm cov hlau yuav tsum yog tooj liab
Lub taub hau hlau (lub taub hau hlau) feem ntau yog tsim los ntawm tsib cov ntaub ntawv hlau: tooj liab, hlau, npib tsib xee, chromium thiab tin.
Lub cev tseem ceeb yog tooj liab, tooj liab yog nyiam dua liab (liab liab) tooj liab, tooj liab - raws li cov khoom siv hluav taws xob, yog cov khoom tseem ceeb ntawm cov hlau taub hau (lub taub hau hlau). Kev suav txog li ntawm 85 feem pua ntawm cov khoom siv ntawm lub taub hau hlau, tooj liab muaj cov thermal conductivity zoo, uas yog qhov zoo rau cov cua kub ceev ntawm cov hlau taub hau. Cov lus qhia zoo soldering hlau yog ua los ntawm tooj liab. Tam sim no, qee cov tuam ntxhab siv tooj dag lossis txawm tias hlau ncaj qha rau cov txiaj ntsig. Tus nqi yog txo, thiab cov nyhuv tshav kub ntawm lub taub hau soldering kuj txo.
