Condenser aperture-A small laser-bored hole within a flat strip of molybdenum put close to the condenser lens that can help to Restrict spherical aberration. Toggle navigation M?u s?n ph?m M?u cúp pha lê M?u cup pha lê m?i nh?t M?u bi?u tr?ng pha lê M?u h?p ??ng r??u cao