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...
对总统安全的担忧可能会给他的调解使命蒙上阴影。Fears for the President's safety could overshadow his peace-making mission.他认为从事祷告和门徒的工作是他的使命。He saw his vocation as one of prayer and apostolic work.我必须忘掉这些枝节问题，记住我的使命。I must forget these sid...
What if it rained and then froze all through those months?要是那几个月一直又下雨又冰冻怎么办？The windows didn't fit at the bottom so for a while we froze even in the middle of summer...窗子底下关不严，所以有一段时间即使是在盛夏我们也觉得很冷。He either suffocat...