Kev xav
Kev tswj tau siab 800 nm wavelengths laser yog xaiv absorbed los ntawm cov hauv paus plaub hau.Lub teeb absorbed heats cov hauv paus plaub hau, thaum kawg ua tiav cov nyhuv ntawm kev tshem tawm cov plaub hau tsis xav tau.
Qhov zoo
Tsis mob, kho sai, kev nyab xeeb, dav siv tau, Tus nqi tu qis.
Post lub sij hawm: Nov-25-2021