The assertion is known as the closed graph theorem for Hilbert spaces.这个断语被称为希耳伯特空间的闭图象定理.From the point of view of Hilbert space sets of measure 0 are negligible.从希耳伯特空间的观点看来,测度为0的子集是可以省略的.His method is an improvement o...
The wanderer has to sleep rough.这个流浪汉到处为家.Jobless and penniless , he had to sleep rough in the fields for several months.他既无工作又无钱,只好在野外露宿数月.Those who do not have relatives to return to are left to wander the streets and ...
小河越来越窄,最后变成了涓涓细流.The stream had thinned down to a mere trickle.这条小河变成细流了.The stream has thinned down to a mere trickle.涓涓细流汇成了小溪.The trickle became a stream....