exit lighting造句

• Angle of elevation of exit light : 0200 exit light can be swayed within horizontal
  出射光轴仰角： 0 - 20出射光轴水平面内可作6
• Exit lights in some facilities have been turned off during the show or the ride , but will turn on automatically in an emergency
  部分设施的逃生照明平时将不开灯，但会于紧急状况时自动亮起。