transmittance txhais li cas
Thaum qhov xwm txheej teeb pom kev flux tawm ntawm lub teeb pom kev zoo los yog qhov xwm txheej nruab nrab ntawm qhov nruab nrab mus rau sab tod, qhov sib piv ntawm lub zog ci ntsa iab tau kwv yees thiab kis tau los ntawm qhov khoom mus rau tag nrho cov hluav taws xob muaj zog ntawm cov khoom yog hu ua transmittance ntawm cov khoom. Cov.