Unverified50% confidenceDecision RuleTime unknown
带中心瞄准孔(aiming hole)的信号镜可将反射光精准对准目标,有效反射距离比无孔平面镜远,专业救援级产品孔径设计能在数公里外被飞机或船只识别
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Unverified选择带有中央瞄准孔(retro-reflective aiming mesh)的镜片,瞄准孔设计能让使用者精准将阳光反射到目标点,无瞄准孔的普通镜面在实际救援中命中率大幅下降79% similarUnverified信号镜有效反光距离可达16-40km(晴天),远超声光哨和手电,但完全依赖阳光和瞄准技巧——应选带瞄准孔(retroreflective aimer)的军规款,普通镜面难以准确对准搜救目标78% similarUnverified自带精密瞄准孔(retro-reflective aiming aid),使用者可较快将反射光对准目标,上手门槛低于无瞄准孔的镜片77% similarUnverified信号镜的日间反光信号可达16-48km(取决于太阳角度),远超电子设备,但完全依赖阳光;应选带瞄准孔(retroreflective aimer)的款,能精准将光斑打向搜救目标77% similar
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