With good water and dust proof functions;

具有良好的防尘、防水等性能；

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Knowledge in waterproof, dust proof and sealing.

具有防水、防尘和密封方面的知识。

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The front of the beam expansion system is also provided with a dust proof mirror.

在其扩束系统前面还设有一个防尘镜。

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As previously reported by The Wall Street Journal, the new phone, tentatively called the Galaxy S 4 "Active, " would be waterproof and dust proof.

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Its fully sealed design protects internal components, making it drop-proof, shock-proof, spill-proof, dust-proof, and watertight.

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Protected against the elements, it is dust and sand proof.

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