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改进教室人工照明是保护学生视力的重要措施之一。怎样改善教室的人工照明,使其发挥更大效果?有一种“八字型”配置法可以达到这种目的。一间教室同样安装四支日光灯(每支四十八时长),采用“八字型”配置法
The improvement of artificial lighting in classrooms is one of the important measures to protect students’ vision. How can we improve the artificial lighting in the classroom to make it more effective? A “eight-character” configuration method can achieve this goal. A classroom also installs four fluorescent lamps (each forty-eight hours long) using a “eight-character” configuration