A numerical method simulating high current ion sources for neutral beam injection is given in this paper as well as its typical result.

本文叙述了中性束注入器中的强流离子源引出系统离子束光学性质的数值模拟方法，并给出了典型计算结果。

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The dynamic equation and the dynamic trait of high-current ion beams, the main mechanism of halo-chaos formation and several main nonlinear controlling methods are summarized in the paper.

本文综述了强流离子束的基本动力学方程及其基本动力学特性，单离子运动方程，束晕-混沌形成的典型物理机制及其主要控制方法。

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But by firing its three ion engines one at a time over 620 days — accumulating another 60 miles per each day — Dawn has reached its current astronomical speed and has no plans of slowing down.

但是在620天的时间里开动了三个引擎之一——再积累每天60英里——曙光号就已达当前的天文速度，而且没有减速的计划。

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They also used a new,lithium-ion battery that is expected to last longer than batteries in current hybrid cars.

VOA: special.2010.11.17

And a couple of future cars, like the mid-sized Aura and the replacement for the current Ion, look wonderful, both inside and out.

FORBES: Magazine Article

In this way, it is possible to check the current charge status of the lithium-ion battery or to verify the vehicle's current range on a map.

ENGADGET: Mercedes-Benz introduces B-Class Electric Drive, we go eyes-on

Although the current batteries are "durable and reliable, " Hartline said lithium ion batteries pack more energy into a smaller space.

CNN: Hybrids trick out, plug in