Txhim khu kev qha Chaw tsim tshuaj paus ntawm Optical lens peb tau los ua ib lub tuam txhab kho qhov muag integrating lens tsim, ntau lawm thiab muag khoom.
Txhim khu kev qha Chaw tsim tshuaj paus ntawm Optical lens peb tau los ua ib lub tuam txhab kho qhov muag integrating lens tsim, ntau lawm thiab muag khoom.
Txhim khu kev qha Chaw tsim tshuaj paus ntawm Optical lens peb tau los ua ib lub tuam txhab kho qhov muag integrating lens tsim, ntau lawm thiab muag khoom.