焦距是光学透镜和光学仪器的重要光学特性参数。
Focal length is one of the most important optical characteristic parameter of optical lenses and optical instruments.
大气光学参数包括了影响激光大气传输的多种大气光学特性参数。
The atmospheric optical parameters include many atmospheric characteristic parameters which affect the laser propagation in the atmosphere.
为了测量生物组织的光学特性参数，采用了CCD漫反射法和透射法。
To measure optical parameters of biological tissues, CCD diffusing reflection and transmission measurements were introduced.
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