face of the screen造句

• According to Wrigley Field ground rules, balls that hit the top or face of the screen and bounce back are in play.
• The rear face of the screen was covered with a series of tiny triangular pyramids imprinted on an aluminum sheet, coated on the inside of each face with colored phosphor.
• To reduce these resonant effects, one or two horizontal stabilizing wires, called " damping wires ", are welded across the grille wires, and may be visible as fine dark lines across the face of the screen.
• These were used to bend the beam through an angle and cause it to hit the front face of the screen . 2D scanning was accomplished by charging two of the horizontal plates to select a vertical location on the display, and then quickly charging the deflection plates at the top in turn to select a horizontal location.