Kaus Lim Qab Teb vam tias yuav nrhiav lwm qhov chaw ntawm graphite mov yog tias muaj teeb meem tshwm sim nrog Tuam Tshoj
Nag hmo nws tau paub tias txij lub Kaum Ob Hlis 1, Suav cov tub ceev xwm yuav qhia txog kev tswj hwm tshwj xeeb tshaj li kev xa tawm ntawm qhov hu ua "dual-siv" graphite txhawm rau tiv thaiv kev nyab xeeb hauv tebchaws. Hauv kev xyaum, qhov no yuav txhais tau tias muaj teeb meem nrog cov khoom siv graphite tuaj yeem tshwm sim hauv Tebchaws Meskas, Nyiv, Is Nrias teb thiab Kaus Lim Qab Teb. Cov tub ceev xwm ntawm lub tebchaws tom kawg tau ntseeg tias lawv tuaj yeem nrhiav lwm txoj hauv kev [...]