本文给出了一种电能计量装置现场校验的方法，通过对三相电能表无功计量误差的校验，可以间接地求得其表计的有功计量误差。
TA field calibration method for power metering device is given. By calibrating the error of the reactive power metering, the error of active power metering can be indirectly calibrated.
客户花大约 300 美元买一架自动驾驶仪，其中包括 GPS 设备、加速表、陀螺仪、磁力计等。
Customers pay about $300 for an autopilot that includes a GPS device, accelerometers, gyroscopes, magnetometers and so on.
欧洲的银行股票在资产价值以下交易，说明投资者预期他们的资产负债表在将来会有大额的减计。
European bank shares trade at well below asset value, suggesting that investors expect their balance-sheets to suffer significant write-downs in future.
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