sealed beam

短语

a. （尤指车灯）密封光束的

词形变化

sealed beams 复数 sealed beams

释义与例句

n.
  1. 1.

    A type of electric lamp for producing a beam of light in which the filament is sealed inside a unit consisting of the reflector and lens so as to ensure the alignment of the beam and to protect the reflector from becoming dirty or tarnished.

    工程

    The new Sealed Beam Headlights are designed to maintain substantially their initial efficiency throughout their life.