Powered by ion propulsion instead of conventional rocket fuel, Dawn slid around Vesta on July 15 after a 1.7 billion-mile cruise.
以离子助推而非传统火箭燃料的“黎明号”在7月15日进入灶神星轨道之前已进行了一次17亿英里的巡航。
The exhaust velocity, though, is enormous—more than ten times that of a chemical rocket—and this makes ion propulsion extremely efficient.
但其排气速度却异常惊人，大约为化学燃料火箭的十倍—这使得离子推进器的效率非常高。
The shade would consist of individual craft around one metre across, put into position using a combination of magnetic launchers and ion propulsion.
遮阳天棚将由宽大约为一米的个体飞行物组成，并通过受到磁性发射装置与离子推进的综合作用而被定位。
An ESA engineer working with engineers in the UK may have found a solution using a new type of orbit combined with continuous-thrust ion propulsion.
来自欧空局和英国的工程师们可能已经找到了解决方案——采用新型轨道与连续离子动力推进相结合的方式。
The push power be produced is very tiny but the key point is that compare to produce same push power ion propulsion needs lesser fuels than traditional rocket.
由此产生的推力非常微小，但关键的一点是，对于产生相同的推力而言离子推进器所需的燃料要比传统火箭少。
The new record eclipses the previous record for change in velocity held by Deep Space 1, which launched in 1998 but had its ion propulsion engines shut down years ago.
新记录湮没了之前由“深空1号”改写的记录，深空1号于1998年发射几年后其离子推进引擎关闭。
Due to the low cost of the battery cells and excellent performance at ambient temperature, Lithium-ion (Li-ion) battery is a promising technology for propulsion applications.
由于此蓄电池的低成本和在环境温度下的优秀性能，锂电池将会在推进力应用的技术上有广泛的前途。
Due to the low cost of the battery cells and excellent performance at ambient temperature, Lithium-ion (Li-ion) battery is a promising technology for propulsion applications.
由于此蓄电池的低成本和在环境温度下的优秀性能，锂电池将会在推进力应用的技术上有广泛的前途。
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