The space particle environment is composed of galactic cosmic rays, solar flares and geomagnetically-trapped particles.

空间高能粒子环境由银河宇宙射线、太阳宇宙射线及地磁捕获粒子组成。

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The major factors that affect the trapping were discussed and suitable beam waists and radii of the trapped particles were demonstrated.

给出影响捕获微粒的主要因素，指出存在最佳束腰半径和被捕获粒子半径。

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The basic problem seems to be with non-bumper cases, specifically ones that slide on to the phone, and the danger of trapped particles scratching the back of the phone while taking the case on and off.

ENGADGET: Apple afraid of a shattering followup to its Antennagate woes?

The lung tissue reacts to the dust by developing nodules and scarring around the trapped silica particles.

BBC: Kidney disease 'risk from silica'

But gamma-ray telescopes are also confused by charged particles trapped in the earth's magnetic field.

ECONOMIST: A new gamma-ray telescope has just been launched