例句與造句

1. The case of free meet-semilattices is dual, using the opposite subset inclusion as an ordering.
2. Often a more specialized version of the theorem is used, where " L " is assumed to be the lattice of all subsets of a certain set ordered by subset inclusion.
3. Again, in infinite posets maximal elements do not always exist-the set of all " finite " subsets of a given infinite set, ordered by subset inclusion, provides one of many counterexamples.
4. As an example, let " S " be the set of all finite subsets of natural numbers and consider the partially ordered set obtained by taking all sets from " S " together with the set of integers $ ! and the set of positive real numbers  ! +, ordered by subset inclusion as above.
5. It's difficult to find subset inclusion in a sentence. 用subset inclusion造句挺難的