Yuav ua li cas xaiv calibration luj?

Peb yuav tsum xyuam xim dab tsi thaum peb xav yuav

Peb Cov Ntawv Xov Xwm Txhua Lub Limtiam

Nws yog ib tug ntev tsim qhov tseeb hais tias ib tug reder yuav txaus siab los ntawm
qhov nyeem tau ntawm nplooj ntawv thaum saib