Lub Hoobkas Sib Tov Pob Zeb Ua Ke yog ib txheej txheem ua tiav ntawm cov khoom siv tshwj xeeb rau kev npaj cov pob zeb tshiab. Nws lub luag haujlwm yog thauj thiab pub cov khoom siv raw ntawm cov pob zeb cement - cement, dej, xuab zeb, pob zeb thiab cov khoom sib tov raws li qhov sib piv ntawm cov khoom xyaw. , khaws cia, ntsuas, sib tov thiab tso tawm kom tsim cov pob zeb tiav uas ua tau raws li qhov yuav tsum tau ua zoo. Haum rau cov kab tsim cov kav dej.
Lub tshuab sib tov pob zeb planetary siv ua lub tshuab tseem ceeb kom ua tiav qhov sib tov zoo rau cov pob zeb qhuav, yas thiab ntau yam sib xyaw. Lub hau sib tov thiab cov hniav sib tov tau kho tshwj xeeb, thiab qhov kawg ntawm lub qag tshwj xeeb thiab daim ntawv kaw tau txhim kho lub neej ua haujlwm ntawm lub tshuab tseem ceeb. Los ntawm cov khoom thiab kev ua ntawm caj npab sib tov, lub hniav sib tov, qhov chaw pub khoom noj, cov txheej txheem pub khoom noj, thiab lwm yam. Tus qauv tsim tshwj xeeb thiab kev faib khoom tsim nyog daws qhov teeb meem ntawm cov pob zeb lo thiab txo qhov siv zog ntawm cov neeg ua haujlwm.
Lub sijhawm tshaj tawm: Lub Peb Hlis-22-2019
