例句與造句

1. By the spectral theorem for compact operators, one also obtains that the set of " ? " for which the solvability fails is a discrete subset of "'R "'( the eigenvalues of " L " ).
2. Any discrete subset " S " of Euclidean space must be countable, since the isolation of each of its points together with the fact the reals means that the points of " S " may be mapped into a set of points with rational coordinates, of which there are only countably many.
3. In linguistics, a "'mass noun "', "'uncountable noun "', or "'non-count noun "'is a noun with the syntactic property that any quantity of it is treated as an undifferentiated unit, rather than as something with discrete subsets.
4. It's difficult to find discrete subset in a sentence. 用discrete subset造句挺難的