backing device

基本解释

DRIVER - match against the name of the driver backing the device
DRIVER - 匹配设备的驱动名称
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DRIVERS - match against the name of the driver backing the device, or the name of the driver backing any of the parent devices
DRIVERS - 匹配支持设备的驱动名,或任何它的上级设备的驱动名
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With dnotify, the file descriptor pins the directory, preventing the backing device to be unmounted, a particular problem with removable media.
而使用 dnotify，文件描述符就固定了目录，妨碍备用设备卸载，这是可移动媒体的一个典型问题。

According to the release notes, iOS 4.3.3 reduces the size of the location database cache, stops backing the cache up to iTunes when you connect your device to a computer, and deletes the cache entirely when you turn Location Services off.
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With the GALAXY Camera (Wi-Fi), users can use the dual-band Wi-Fi technology embedded in the device to share photos with family and friends through email, social networks or mobile communication services like Samsung ChatON right from the device, as well as enjoy the luxury of backing-up pictures instantly to cloud services when connected.
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The device feels quite rigid, thanks to Motorola's hallmark Kevlar backing, although the aluminum rim did begin to show itself underneath the black paintwork after some light scratches.
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