In this simulation. the density ratio of beam electron and background electron is 0.125.

数值模拟的束流密度与背景电子密度之比为0.125。数值模拟的结果说明，两者相符较好。

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The momentum flux conservation equation includes the momentum transfer of two gases (heating gas and beam electron).

动量守恒方程包括两种气体(热气体和束电子)的动量转移。

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The residual strain fields at composites interface were studied with two convergent beam electron diffraction (CBED) techniques.

用两种会聚束电子衍射(CBED)技术研究了复合材料界面残余应变场。

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It is an electron beam. In the 1890s, the latter part of the 19th century a very fashionable word was "ray."

那是个电子束，在十九世纪九十年代，就是19世纪末,一个很时髦的词汇-“光线“

麻省理工公开课 - 固态化学导论课程节选

And now we repeat the experiment, only this time we come with an electron beam.

现在来重复一下实验，仅在这次我们得到了电子束。

麻省理工公开课 - 固态化学导论课程节选

So rather than calling this an electron beam, this was called a cathode ray.

因此我们最好别叫它电子束，而是阴极射线。

麻省理工公开课 - 固态化学导论课程节选

High precision "dual use" items such as milling machines, electron beam welders, and high strength aluminum all turned up missing.

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To be accurate, Lima is using a technique known as Electron Beam Melting (EBM) which is more advanced than your basic laser sintering method.

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While the patient is still on the operating table, a lead disc is slipped behind the breast tissue to protect the chest cavity, and an eight inch wide electron beam focused directly on the area surrounding the tumour.

BBC: 'One stop shop' for cancer