Qhov tseeb, thaum yuav ib yam khoom, peb ib txwm xav txog tus nqi, kev siv yooj yim thiab nws ntau yam. Lawm, tus yuam sij yog xaiv raws li koj tus kheej qhov xwm txheej. Zoo li txhuas bronze rods, nws tseem yuav tsum tau xaiv kom zoo.
Raws li qhov xwm txheej tam sim no ntawm aluminium bronze rods, peb tuaj yeem pom los ntawm cov khoom lag luam cov txheej txheem zoo heev thiab cov txiaj ntsig zoo heev, thiab yog tias peb nkag siab qhov xwm txheej tam sim ntawd, peb tuaj yeem ua rau txhua tus paub txog qhov xwm txheej ntawm lawv tus kheej cov cuab yeej zoo heev. Nws qhia qhov zoo sib txawv. Nov yog txoj hauv kev zoo heev kom ua tiav txhua tus' kev xyaum zoo heev. Tom qab tag nrho, nyob rau hauv cov ntaub ntawv ntawm kev them nyiaj, nws yuav ua tau kuj yooj yim los yog tam sim ntawd.
Paub txog qhov xwm txheej tam sim no ntawm aluminium bronze rods, kev sib tw kom zoo dua ntawm kev them nyiaj ib txwm tso cai rau txhua tus kom muaj qee lub sijhawm los xaiv. Thaum koj paub tias koj tsis nyiam cov khoom ntawd, ces siv qhov no, koj tsis tuaj yeem them tam sim ntawd, yog li koj tuaj yeem rov qab thiab pauv cov khoom tam sim ntawd. Yog li ntawd, txoj kev no yog qhov yooj yim heev, thiab txhua tus tuaj yeem yooj yim dua hauv qhov xwm txheej no.
Ua tib zoo saib ntawm qhov xwm txheej tam sim no ntawm cov khoom lag luam, daim ntawv thov them nyiaj tuaj yeem ua kom txhua tus neeg yuav khoom sai dua, thiab nws yooj yim dua los yuav. Nws yog qhov tseeb tias daim ntawv no yog tam sim no nyiam los ntawm ntau tus neeg thiab xav mus. Ib txoj hauv kev zoo rau kev thov.
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