原因在与日志操作经常被当作一种辅助操作，日志资源被当作一种只写的设备，只满足快速和廉价即可。
The reason for this is that logging activities are seen as a side activity and logging resources are regarded as write-only devices which just have to be fast and cheap.
这样能够减少设备的小型写操作的数量，从而优化了性能，并且有利于延长设备寿命。
This minimizes the number of small writes that are presented to the device, which in turn optimizes performance and helps extend the usable life of the drives.
时钟频率为1兆赫。在写操作的过程中，设备从传感器独处的数据总取样。
The clock frequency is 1 MHz. The device samples sensor-read data during the write operation.
的用户模式应用程序请求读取某些设备/写，即让I /O操作。
The user-mode application requests to read/write from some device, i. e. makes I/O operation.
内容不能进行修改的一种存储设备，除非是一个特殊用户或者在特定条件下方可进行写操作。例如，通过锁定而防止写入内容的存储设备。
A storage device whose contents cannot is modified, except by a particular user, or when operating under particular condition, for example, a storage device in which writing is prevented by a lockout.
内容不能进行修改的一种存储设备，除非是一个特殊用户或者在特定条件下方可进行写操作。例如，通过锁定而防止写入内容的存储设备。
A storage device whose contents cannot is modified, except by a particular user, or when operating under particular condition, for example, a storage device in which writing is prevented by a lockout.
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