一个飞机上的探测镜头用几十片镜片,每片几千刀成本。
民用光学玻璃每炉熔制出来的折射率有+/-0.1% tolerance
一个飞机上的探测镜头用几十片镜片,每片几千刀成本。
民用光学玻璃每炉熔制出来的折射率有+/-0.1% tolerance
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