Both the heating of plasma and the acceleration of particles are important topics in plasma physics and plasma astrophysics.

研究等离子体加热和粒子加速问题，是等离子体物理和等离子体天体物理中的重要课题。

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Small objects such as dust particles and water droplets fall only small distances before losing most of their acceleration.

向尘埃和小水滴这种小物体只下降很短距离就失去它们的大部分加速度。

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The general formulae which represent the critical intensity of the laser pulse for the acceleration and the corresponding energy gain of the particles are derived.

导出了电子获得加速所需的激光强度阈值及相应的电子能量增益的一般解析表达式。

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We are talking about particles of constant acceleration.

我们目前都是在讨论匀加速运动的质点

耶鲁公开课 - 基础物理课程节选

Japanese space agency (Jaxa) scientists want to detect a measurable acceleration in the spacecraft as photons - the particles of light - from the Sun fall on the roughly 200-sq-m, ultra-thin sheet.

BBC: Mini-camera pictures Japan's Ikaros solar sail