身体：俄罗斯蓝猫身材苗条，颈部细长头部：头宽脸尖细，耳宽大。
Body: the blue cat of Russia has a slender figure, neck is long and thin head: Point is thin the head width face, the ear is spacious.
用这一方法设计的菲涅耳透镜，齿宽较大，齿距不等。
The new method for designing Fresnel lens has a wide serration breadth and unequal pitch.
用这一方法设计的菲涅耳透镜，齿宽较大，齿距不等。
The new method for designing Fresnel lens has a wide serration breadth and unequal pitch.
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