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1, With a cylindrical parabolic mirror collection sunlight lit the torch.
2, The reflector adopts parabolic mirror with chromium - plated finish, high reflectivity and even illuminance in illuminated surface.
3, The quantative test of lightweight 630 quartz parabolic mirror has firstly been implemented with this method.
4, She uses a parabolic mirror to focus light rays from the sun.
5, Sunlight comes into the fibre - optic cables through holes in the parabolic mirror.
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