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You don't want a sharp operator manipulating the definition of shares in the cause of a deceitful report, so the standard XBRL taxonomy itself provides a definition of a unit of shares.

您并不希望看到一名不诚实的股票操盘手在一份具有误导性的报告中伪造股票的定义，因此标准XBRL分类本身提供了一个股票单位的定义。

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Money provides a unit of account that serves as a standard to measure value.

钱是一种计算单位，用这个计算单位可作为衡量价值的标准。

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As most readers doubtless know, H beams are the standard unit of steel used in construction.

ECONOMIST: Buttonwood

So while growth in the Fed's monetary base is overrated when it comes to currency values and inflation (base growth was the same in the '70s as it was in the '80s), the failure of the Nixon Treasury to clearly state its commitment to the Bretton Woods gold standard led to a falling unit of account.

FORBES: Magazine Article

The unit comes with a docking station for connecting to your computer, but there's also a standard USB port on the bottom of the unit in addition to the docking connector, so presumably you don't need to lug the dock around with you to transfer files on the go.

ENGADGET: Sony Reader details and pics