bsolute optical frequency measurement 絕對光頻測量; 絕對光頻測 MxE]EJZ  
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absorpting loss in optical thin-film 光學(xué)薄膜的吸收損耗 cx\"r  
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console optical-display plotter 控制臺光顯示繪圖儀 PxkV[nbS  
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continuous variable optical attenuator 連續(xù)可變光衰減器 Hm-#Mpw  
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continuous-wave optical ranging system 連續(xù)波光學(xué)測距系統(tǒng) RY-iFydPc  
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convex optical tool 光學(xué)玻璃凸面磨 -]N2V'QB  
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