Kev Qhia Ntawv Tshwj Xeeb Cov Nrig, 600 Kab

$Educational Diffraction Grating,600 Lines Featured Image$

$Educational Diffraction Grating,600 Lines$

E14.2413

Cov lus piav qhia luv luv:

Xa email rau peb

Khoom Nthuav dav

Cov khoom lag luam

600 Kab, 33 * 75mm, Qhov rai 9 * 14mm

Yav dhau los: Grating, 600 Txoj Kab

Tom ntej: Stereoscopic Duab Loj, Teeb

Sau koj cov lus ntawm no thiab xa rau peb

Cov khoom pawg