Peb cov kev pabcuam

>> Ib lub tshuab, ib tus lej, cov khoom siv tshwj xeeb cov ntaub ntawv yuav tsum khaws cia tsis pub tsawg tshaj 30 xyoo;
>> Ntau tshaj 20 tus engineers tom qab muag muab kev pabcuam thoob ntiaj teb;
>> Cov cuab yeej ua haujlwm thiab kev saib xyuas yog kawm nyob rau ntawm qhov chaw los ntawm cov kws tshaj lij;
>> Cov kev pabcuam huab huab muab kev pabcuam tej thaj chaw deb txhua lub sijhawm, nyob qhov twg.