A relation between distribution sets in the distribution class and the subsets in a spectral class is given.

给出了分布类中的分布集与谱类的子集之间的关系。

youdao

In Africa,the foundation works with the non-profit organization KickStart, which develops inexpensive technology for small-scale farmers, and sets up local profit-making distribution systems.

VOA: standard.2009.12.18

Thus we never do end up with two sets of power distribution lines.

FORBES: Which Should We Have: Public Utilities Or Regulated Private Monopolies?