IN TEM GIá SảN PHẩM SECRETS

Condenser aperture-A small laser-bored gap inside a flat strip of molybdenum placed close to the condenser lens that can help to limit spherical aberration.Saturation Position-The point at which very good electron emission from your gun is realized with out shortening the filament everyday living appreciably.Decal bạc là loại có chất lượ