horizontal light beam adjusting screw

例句：

1. 1. The horizontal light beam adjustingscrew is used to adjust the brightnessof the light source.
   水平光束调节螺丝用于调整光源的亮度。
2. 2. Thetechnician carefully adjusted the horizontallight beam adjusting screw toensure proper alignment.
   技术人员小心翼翼地调整了水平光束调节螺丝，以确保正确对齐。
3. 3. The horizontal light beam adjusting screwwas responsible for ensuring that the light sourcewas positioned correctly.
   水平光束调节螺丝负责确保光源位置正确。