The higher orders were retained as an infinite sum of standing eigen-waves to deal with the fields inside the grooves.
其中对槽区内的场处理,保留其高次项,表示为一无限本征驻波之和的形式。
In an infinite dimensional space there always exist two subspaces whose vector sum is different from their span.
在一无限空间中恒存在两个子空间,其矢量和与其张成空间不同。
The sum of a finite or infinite sequence of expressions.
最低限度应有设备表一有限或无限序列的表达式的和。