long-focal length lesn 长焦距物镜
long focal length lens 长焦距物镜
long focal-length telemicroscope 长焦距望远显微镜
long focal length camera lens 长焦距照相镜头 ; 长焦距摄影镜头
long-focal-length camera 长焦距照相机
long-focal length lens 长焦距物镜
At present, some difficulties are encountered in measurement of long focal length of lens.
目前，透镜长焦距的有效测量还存在一些难题。
In that case, Fourier transform system with long focal length and high power lens and method of linear decision are proposed.
以肺癌细胞筛选为例，提出用长焦距、高倍率的傅里叶变换系统和线性判别处理。
Experiment data demonstrates that this method can be applied to the real-time long focal length measurement with high accuracy.
实验结果表明，这种方法能够实时地、非常精确地测量长焦距。
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