Cov kev saib xyuas txij nkawm ntawm cov khoom lag luam roj hmab feem ntau yog 4 txog 5 xyoos, nyob ntawm kev siv ib puag ncig thiab kev hnav. Piv txwv li, kev txij nkawm txij nkawm ntawm cov log tsheb tsheb yog feem ntau yog li 4 xyoos, thaum lub sijhawm tswj cov roj hmab ntsaws ntawm cov roj hmab thiab kav dej ntev, feem ntau yog 5 xyoos.
Kev ntsuas kev ntsuas tshwj xeeb rau kev saib xyuas ntawm cov khoom lag luam roj hmab
Ntxiv cov tshuaj tua kab mob antioxidants thiab UV nqus mus rau cov khoom siv roj hmab tuaj yeem tiv thaiv cov pa oxygen thiab qeeb qeeb; Nyob rau tib lub sijhawm, UV duab yog ib qho ntawm cov ntsiab lus rau cov roj hmab laus, thiab ntxiv UV tej kev nqus tuaj yeem tiv thaiv roj hmab los ntawm UV puas.
Kev tswj hwm nruj ua tiav kev ua haujlwm kub: Roj Hmab yog qhov nquag ua rau kev laus vim qhov kub thiab txias thaum ua tiav, yog li kev ua kom sov tau tswj hwm kom txo qis tus nqi.
Khaws kom qhuav: ib puag ncig noo yuav ua kom muaj kev laus ntawm cov roj hmab, yog li nws yog qhov yuav tsum tau kom cov khoom lag luam roj hmab kom qhuav thiab tsis tas yuav muaj ib puag ncig cov av.
Khaws rau hauv qhov kub tsawg thiab cov av noo ib puag ncig: thaum khaws cia cov khoom lag luam roj hmab, ib puag ncig tsawg thiab cov av noo ib puag ncig yuav tsum raug xaiv kom qeeb qeeb. Piv txwv li, cov khoom lag luam roj hmab tuaj yeem muab khaws cia rau hauv qhov chaw txias thiab qhuav xws li chaw nres tsheb lossis hauv qab daus lossis hauv qab daus.
Qhov sib txawv ntawm kev txij nkawm mus rau ntau hom roj hmab khoom
Cov log tsheb: feem ntau pom zoo los hloov lawv txhua 4 lub xyoo, thiab lub sijhawm tshwj xeeb yog nyob ntawm kev siv ib puag ncig thiab kev hnav.
Cov roj hmab ntsaws ruaj ruaj thiab kav dej: Cov kev saib xyuas txij nkawm feem ntau yog 5 xyoos, tab sis lub sijhawm tshwj xeeb nyob ntawm kev siv ib puag ncig thiab hnav.
Poob siab-nqus cov roj hmab, xws li cov kev poob siab nyob rau hauv chassis thiab cav, lawv txoj kev nyiam ua lawv kuj nyob ntawm kev siv ib puag ncig thiab hnav.
