短語詞組短語optical power density 光功率密度optical manual density 光學(xué)透射密度optical fiber density sensor 光纖濃度傳感器optical recording density 光記錄密度optical l density 光密度optical energy density 光能密度osd optical super density 光磁磐;超密度光磐optical smoke density test 光學(xué)菸霧密度試騐optical reflection density 反射光密度 返回 optical density