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An additional frequently used optical area may be the facet of the cylinder. This sort of surfaces have power only while in the meridian perpendicular towards the cylinder axis. Cylindrical lenses are therefore utilised anywhere it is wanted to vary the magnification from one meridian to the perpendicular meridian. Transmission https://surroundsoundsystem03355.theisblog.com/30094304/about-soundbar-for-tv

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