Its closed design smooth surface and rounded corners prevent dust accumulation and facilitate cleaning.

它紧凑的设计，光滑的外表和圆角避免的了灰尘堆积并且更加容易清洗。

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Adjust the precipitator hopper discharging operation, to prevent excessive dust accumulation form vortex wear bag.

调整除尘器灰斗卸灰作业，防止粉尘堆积过高构成涡流磨损滤袋。

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By analyzing trouble phenomenon on dust accumulation of duster and polar discharge, the appropriate measures are taken.

对除尘器产生的积灰、极线放电等故障现象进行了分析，采取了相应的措施。

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Some of the fine layers on Mars may have formed by the slow accumulation of dust and ice, perhaps only 100 micrometers (0.004 inches) per year.

BBC: Mars south pole

Curiously, the previous-generation product wasn't rain-proof, but that's been resolved now -- a new water- and dust-resistant housing is designed to let water flow through the eyepieces without accumulation.

ENGADGET