Method Subjective symptoms of the VDT operators under the Multi user system were measured before and after work in the field study. Visual indices were measured at 8:15, 9:15, 10:15, 11:15, or 12:15 a.
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方法对寻呼员上午工作前和工作后的主观感觉进行了测评,并分别在8 :15 、9 :15 、10 :15 、11 :15 、12 :15 对闪光融合频率、动态视力和屈光度等视觉指标进行现场测试。
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