Lub voj voog rov zoo tshaj plaws ntawm cov xauv xauv yog dab tsi, thiab ntev npaum li cas tus neeg siv khoom siv tam sim no lub sij hawm rov ua dua tshiab?Yuav ua li cas muaj kev nyab xeeb txaus ntshai yog tias qhov hloov pauv tsis tau raws sijhawm?
Vim qhov tsis sib xws ntawm cov khoom siv kho vajtse, cov khoom lag luam lub neej sib txawv heev.Txawm li cas los xij, raws li kev pabcuam lub neej txoj cai ntawm lub teb chaws tus qauv thiab cov qauv European, lub neej voj voog ntawm cov khoom yog 100,000 zaug thiab 200,000 zaug, thiab lub sijhawm hloov pauv yog li 15 txog 20 xyoo.Tam sim no, cov neeg siv khoom siv hauv tsev siv cov khoom siv kho vajtse yog "thaum nws tawg, nws tau hloov thiab kho thaum nws siv nyuaj."Cov cwj pwm no ncaj qha coj cov teeb meem ntawm cov khoom lag luam kev nyab xeeb thiab kev nkag tau yooj yim.Qhov tseeb, kho vajtse yuav raug ya raws thiab ntsev tsuag corrosion.Hauv tshwj xeeb, cov khoom lag luam tiv thaiv tub sab nyiag yuav muaj qhov xav tau kev nyab xeeb thiab kev tiv thaiv kev hloov kho tshiab.Peb pom zoo tias cov khoom yuav tsum tau tswj thiab tswj txhua txhua 1 mus rau 2 xyoo, thiab cov khoom yuav tsum tau hloov thiab hloov kho nyob rau hauv li 8 xyoo.
Post lub sij hawm: Jun-22-2018
