Heavy cast aluminum base.

重型铸造铝基座。

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Die cast aluminum housing, Silastic ring, Tempered glass.

铝压铸外壳，硅橡胶密封圈，钢化玻璃。

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Finally, electron beam modification technology of cast aluminum alloy is introduced.

介绍了铸造铝合金的电子束改性技术。

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In today's metal-based gadgets, you either need to bend a piece of sheet metal, or die-cast with an inferior alloy like aluminum or magnesium.

CNN: Next iPhone may be housed in 'Liquidmetal'

The bulk of the case is cast from a single piece of aluminum, and those fins, which have enough room between them for air to circulate, dissipate heat so that a noisy fan isn't required.

WSJ: A Hard Drive With Quiet Style | Geek Chic