一個飛機上的探測鏡頭用幾十片鏡片,每片幾千刀成本。
民用光學玻璃每爐熔製出來的折射率有+/-0.1% tolerance
一個飛機上的探測鏡頭用幾十片鏡片,每片幾千刀成本。
民用光學玻璃每爐熔製出來的折射率有+/-0.1% tolerance
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