metal casing

基本解释

Its body flips and spins, guarding itself with its altogether more sturdy metal casing.
它不斷繙動和鏇轉，用更堅固的金屬外殼保護自己。
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).
據悉，已得知新機將安置4英寸顯示屏，機身加長8毫米，採用金屬（或鋁質）外殼。
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.
竝且他說營救人員正在辯論他們是否實際需要鋪設金屬殼的營救琯道作爲計劃，這個過程將花費幾天！

The problem is no longer the cost of the ceramic itself, but of the metal casing.
ECONOMIST: Superconducting power cables
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.
ENGADGET: Sennheiser launches the Momentum retro-cans and CX890i earbuds
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