讨论了采用不同的电磁多极场作为动态校正器的可能性.推导了圆形校正透镜、偏转校正场和四极、六极校正场引起的附加象差的公式. The possibility of dynamic aberration correction by using electro - magnetic multipole fields is discussed.
Moonlight was frosting the dew, and an old sundial threw a long shadow.月光把露水照得雪白, 一座旧日规投出一条长长的影子.A device, such as a clock or sundial, used in telling time.计时仪用于计时的装置(如钟或日昝)The hands are actually modeled after the shadow...
Climb , climb the jungle gym.爬爬格子.That is a jungle gym.那是爬格子的游戏.Let's play on the seesaw jungle gym rocker swing merry - go - around slide.我们一起玩跷跷板攀登梯摇床秋千 转椅 滑梯吧....
他接受了剑桥大学的研究员一职。He has accepted a research professorship at Cambridge University.他选择到这家公司做了市场研究员。He chose to join the company as a market researcher.她曾经是化学研究员。She worked as a research chemist....
I called the station to enquire about train times.我打电话到车站询问火车时刻。They neglected to enquire whether these Methods: Were possible or practicable.他们不去问问这些方法是否办得到,是否行得通.We must enquire ( as to ) whether he really came.我们得打听一下...
The dichotomy of discovery and establishment of law also has certain foundations in hermeneutic.法的发现与证立之二分同时存在解释学上的依据.There is a dichotomy between the academic world and the industrial world.学术界与工业界有着天壤之别。Coherence enjoy...