The ring 2 stack is in use.

第2环堆栈已被占用。

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With CES 2013 coming to a frigid conclusion here in Las Vegas, we moseyed our way to the Genius booth and went thumbs-on with the Ring Presenter and the Ring Mouse 2.

ENGADGET

The researchers' calculations place the dust in a ring 2.5 astronomical units from Zeta Lep.

ECONOMIST: Planetary formation

Specifically designed to take advantage of the camera's mirrorless design, the X-Mount has a short flange back distance of just 17.7mm made possible by designing the mount ring as thin as 2.5mm.

ENGADGET: Fujifilm grows X-series mirrorless lineup with 16.3-megapixel X-E1