您还应该对Perl引用和SQL数据库有一定理解。

You should also have some understanding of Perl references and SQL databases.

youdao

尝试是引用光谱定理而得到正规算子恒有非平凡不变子空间的结论。

The cheapest way to get one is to invoke the spectral theorem and to conclude that normal operators always have non-trivial invariant subspaces.

youdao

引用法律规定理解为引用其本身外，还包括其修订、修正或重新实施案。

Reference to any statutory provision shall be construed as a reference to the same as it may have been, or may from time be, amended, modified or re-enacted.

youdao