Winand, M. SQL Performance Explained. Self-published, 2012.
3月5日消息，美国稀土公司表示，将以价值7300万美元的全股票交易收购德克萨斯州一座稀土矿剩余的少数股权，作为其提高国内关键矿物产量努力的一部分。美国稀土公司将以约380万股公司普通股收购德克萨斯矿物资源公司的全部流通股。此次收购将使美国稀土公司成为Round Top项目的唯一运营方，该项目据称是北美已知最丰富的重稀土矿床。
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Some areas are turning the corner, but some analysts fear the government's assumptions about improvements may be ambitious. If so, several billion pounds more will need to be found by the next election, just to maintain services.，详情可参考PDF资料
iFi's new DAC is eight percent smaller than the previous GO Link and 29 percent lighter, approaching the size of Apple's USB-C to 3.5mm Headphone Jack dongle. The GO Link 2's built-in ESS Sabre DAC chipset is supposed to add "6dB of dynamic range between the loudest and quietest moments" and reduce distortion for clearer sound by up to 62 percent when compared to the original GO Link.