离子发动机只发出很微弱的震动。
尽管如此离子发动机也有它的极限。
离子发动机产生的振动极其微弱。
尽管离子发动机不能使航天飞机很好地摆脱地球引力。
Though an ion engine could never lift a spacecraft out of Earth's gravity well.
科学家们通过软件模拟达尔文的进化论，实现了对未来航天器离子发动机的优化设计。
An ion engine designed to power future spacecraft has achieved its optimal design via software that simulates Darwinian evolution.
由电动离子发动机推动的“深空1号”已经到达距离地球一亿英里的地方。
Pushed only by an electronically driven "ion engine", Deep Space One is already over 100 million miles from Earth.
一旦进入太空，离子发动机将稳步推进航天器，最终达到的速度会比使用普通火箭的更高。
Once in space, ion engines steadily propel a spacecraft until it travels faster than it would have using a chemical rocket.
“黎明”号的离子发动机产生0.092牛顿的推力，就像一个较小烟火火箭推动力的五十分之一。
Dawn's produce 92 millinewtons of thrust, something like a fiftieth of the amount in a smallish firework rocket.
但问题是，如果离子没有顺利通过电极栅，而是撞在上面，将会造成电极的烧蚀，从而限制了其使用年限，美国宇航局离子发动机的平均寿命约为3年。
The problem is, ions that bump into the grid instead of passing through it cause erosion, which limits the average NASA ion engine's lifespan to about 3 years.
该车使用一款大容量锂离子电池组，使之在汽油发动机停止运作后，以全电模式运行所能行驶的距离增加。
Together with a big battery pack based on lithium-ion technology, this gives plug-ins a much larger range in all-electric mode, after which the petrol engine kicks in.
火花塞离子电流信号携带着丰富的发动机燃烧过程的信息。
The spark plug ion current signal carries along rich information about the engine combustion process.
事实上，XH- 150是一个三种动力装置的混合体。除了一部汽油发动机和一个普通的锂离子电池之外，它还有一个特殊的电容器。
In fact the XH-150 is a three-way hybrid, employing a petrol engine and conventional lithium-ion batteries as well as its special capacitors.
介绍了一种火花点火发动机在点火和燃烧中所产生的离子信号的基本特征以及该信号在失火故障诊断中的应用。
This paper presents both the basic characteristics of ionic signal produced during ignition and combustion, and its application in the diagnosis of the misfire in a SI engine.
本文建立了汽油发动机油在用油极性组分的分析方法，即硅胶-离子交换色谱法。
A silica gel-ion exchange chromatography has been developed for the analysis of polar components in the used gasoline engine oil.
由于“黎明”号的离子火箭发动机是能够完成从一个小行星移动到另一个小行星上的技巧。曾早些时候，这种技巧在美国国家航空航天局被称作“深太空一号”任务中首次开创。
Dawn is able to perform the trick of moving from one asteroid to another thanks to its ion-rocket engines, pioneered on an earlier NASA mission called Deep Space one.
本文描述了一种直接利用火花塞电极作为传感器检测南方摩托车发动机早燃的方法，作者在文章中详细分析及讨论了离子电流的产生机理。
This paper describes a system for preignition in motorcycle engine using spark plus as a detecting probe, the author carries out researches on a method how the ionic current comes into being.
他计划一旦确定了样机发动机的推力和效率，就开始测量离子的速度和它们的能量。
He plans to begin measuring the velocity of the ions and their energy as soon as the prototype is ready to determine the thrust and efficiency of the engine.
以轴对称非定常欧拉方程为基础，建立了激光推进火箭发动机吸收室内纯气相单组分、以激光等离子体为内热源的流场模型。
A gas flow model with laser plasma as heat source was developed based on axial symmetric Euler equations in the laser propulsion rocket engine absorption chamber.
低温等离子体技术与选择性催化还原技术相结合是降低稀燃发动机排放的有效方法。
Combination of low temperature plasma technology with the selective catalytic reduction technology is the effective method to reduce emissions for lean combustion engine.
低温等离子体技术与选择性催化还原技术相结合是降低稀燃发动机排放的有效方法。
Combination of low temperature plasma technology with the selective catalytic reduction technology is the effective method to reduce emissions for lean combustion engine.
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