"command GDP," which has attracted some attention lately. Command GDP takes terms-of-trade changes into account by deflating current-dollar exports by the import price index ,It equals real income only when the trade balance and the current account balance are both at zero.

翻译过来就是：指挥国内生产总值以贸易条件的变化，到平减目前兑美元的出口，进口物价指数。它等于实际收入只有当贸易平衡和经常帐户余额都为零。

参考http://www.bankofcanada.ca/en/speeches/2006/sp06-14.html