谱集 meaning in English

spectral set

When combined with correlation accumulate technique and power spectrum collection - average technique , the temporal efficiency is enhanced
将它与相关积累技术和功率谱集平均技术相结合，能提高该方法的时效性。
After we define the n - numerical range of bounded linear operators on a hilbert space , we find that the n - numerical range have a series properties very similar to that of the quadratic numerical range . at the same time , we prove that under certain conditions , wn ( a ) c w ~ ( a ) and that when h is finite dimensional and dimti = n , we have a ( a ) = wn ( a ) . therefore , it is nature to guess that when h is an infinite dimensional hilbert space , for any space decomposition dn ? ?
首先给出了n次数值域的定义，我们发现n次数值域不但具有一系列和二次数值域类似的性质，而且在给定的条件下还有n次数值域包含在二次数值域当中，另外当是n维hilbert空间时，它的n次数值域就等于它的谱集，前面的结论促使我们猜想，当是无限维hilbert空间时，对的任意的空间分解d _ n ，都应该有下面的式子成立： ( a ) = _ ( d _ n d ) w _ ( d _ n ) ~ n ( a ) 。