The forward-backward sweep method is adopted in power flow calculation.

潮流计算采用配电网广泛使用的前推回代法。

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Just as we sweep our rooms, so we should sweep backward ideas from our minds.

正如打扫房屋一样，也要扫除头脑中落后的东西。

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Just as we sweep our rooms, so we should sweep backward ideas from our minds.

正如清扫房子一样，我们也要清除我们思想中掉队的器械。

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More deft footwork resulted in another sweep over backward square for four and a second six just cleared long-on.

BBC: SPORT | Cricket | Unconvincing England beat Ireland

He also hit some thumping drives down the ground but on 44 he mis-timed a sweep and the ball looped gently to backward square.

BBC: South Africa too strong for Kiwis

Simmons collected 4-19 from his three overs of medium pace, Dilshan falling in the 18th over when another reverse sweep only found the tall figure of Sulieman Benn at backward point.

BBC: Sri Lanka secure win over Windies