metal casing

基本解释

Its body flips and spins, guarding itself with its altogether more sturdy metal casing.
它不断翻动和旋转，用更坚固的金属外壳保护自己。
We’ve been told that the device will have a 4-inch display and will be 8mm longer than before, with a metal casing (probably aluminum).
据悉，已得知新机将安置4英寸显示屏，机身加长8毫米，采用金属（或铝质）外壳。
And he said rescuers were debating whether they would in fact need to line the rescue tunnel with metal casing as planned, a process that would take several days.
并且他说营救人员正在辩论他们是否实际需要铺设金属壳的营救管道作为计划，这个过程将花费几天！

The problem is no longer the cost of the ceramic itself, but of the metal casing.
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Buttons set into the elegant metal casing allow you to adjust the volume, select music titles, take phone calls and activate voice control or personal assistant features.
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The 10-inch MID 1065, though, has a more premium-feeling metal casing, along with an IPS panel (the pixel count tops out at 1, 280 x 800, so don't get too excited).
ENGADGET