得力激光笔 绿光 教学演示 远射程

评测依据

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• time_range：{"from":"2026-06-26 03:45:49","to":"2026-06-26 03:45:49"}
• intros：{"brand_intro":"得力集团始创于1988年，是中国最大的办公与学习用品综合供应商之一。凭借强大的研发、制造和渠道能力，得力产品覆盖文具、办公设备、打印耗材等多个领域。其激光笔系列以高性价比和稳定品质著称，在政企采购和学校教学中拥有极高占有率，是大众消费者信赖的国民品牌。","product_intro":"得力DL-3930是一款入门级红光激光笔，采用Class 2级激光模组，输出功率小于1mW，安全护眼。笔身采用ABS工程塑料，轻巧耐用，支持远距离（约50米）清晰指示。尾部集成电池仓，使用2节7号电池供电，续航持久。按键反馈清脆，适合日常会议、教学培训等场景，是办公和教学领域的高性价比之选。","key_specs":["激光类型：红光（650nm）","激光等级：Class 2，<1mW","有效距离：约50米","供电方式：2节7号电池","材质：ABS工程塑料","尺寸：140×15mm"]}
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