A backward flow of water, as from the action of OARS.
向后流的水，如由桨的划动引起。
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。
A numerical study is reported on the flow over a backward-facing step.
本文研究单边放大台阶流的数值解。
A numerical study is reported on the flow over a backward-facing step.
本文研究单边放大台阶流的数值解。
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