The study shows that the edge of alpaca's scale is not smooth, the angle of scale is large, but scale density is small.

结果表明：羊驼毛纤维表面鳞片边缘不光滑，且鳞片翘角大，密度小。

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Usually, object features include gray-scale (density, colour), feature, geometry shape, and so on.

常见的目标特征可分为灰度(密度、颜色)特征、纹理特征和几何形状特征等。

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While conspiracy theorists may want to believe that Big Oil, Big Coal and Big Nuclear are stifling the growth of renewables, the simple truth is that coal, oil, natural gas and nuclear can satisfy the Four Imperatives: power density, energy density, cost and scale.

FORBES: Magazine Article

Opponents point out that unlike areas in other countries, mass transit is only economic viable in areas with sufficient density and that on a large scale, massive public transit programs have no chance of becoming self-sufficient.

FORBES: Which Candidate's Energy Plan is Better for America?

If you take the numbers counted, give consideration to their catholic tastes in terms of habitat, the density at which they can breed, and scale it up, the estimate is 53, 900 pairs!

BBC: Bristol - In your garden: which birds rule?