packing and covering造句

例句與造句

1. These problems include " packings and coverings of circles in a plane, and . . . with tessellations on a sphere " and also problems " in the hyperbolic plane, and in Euclidean space of three or more dimensions . " At the time, Todd opined that those problems were " a subject in which there is still much scope for research, and one which calls for considerable ingenuity in approaching its problems ".
2. The logarithm of the packing and covering numbers are sometimes referred to as " entropy numbers ", and are somewhat analogous to the concepts of information-theoretic entropy, in that they measure the amount of " disorder " in the metric space or fractal at scale " & epsilon; ", and also measure how many bits or digits one would need to specify a point of the space to accuracy " & epsilon; ".
3. It's difficult to find packing and covering in a sentence. 用packing and covering造句挺難的