讨论了一种用于电子显微镜系统的发叉形Y2O3阴极的制备工艺及主要性能测试结果.This paper introduces a hairpin Y 2 O 3 cathode used for electronic microscope systems.我想是阴极的材料和生产流程制造了大部分的区别.Isuspect the cathode material and processing makes the biggestdifferenc...
It is a part of Britain as yet largely unaccustomed to tourists.英国的这一块地方还很不为游客所熟悉。Nothing is known as yet about what transpired at the meeting.会上到底发生了什么现在还没人知道。Dorset is as yet unspoilt by coachloads of tourists.多塞特还未遭到大...
“全球2000”成为了小农场主的承保公司。Global 2000 became an underwriter for small farmers.这是一项承保范围广泛的保险.This is an insurance policy with extensive coverage.这份新的保险单被认为是首个承保疾病风险的保险方案。The new policy is believed to be the first scheme to off...