gōngchéngshī / bǎ / cèliáng / shùjù / dàirù / yícìfāngchéngshì / hěnkuài / suànchū / le / guǎndào / de / liúliàng

工程师把测量数据代入一次方程式，很快算出了管道的流量。

The engineer substituted the measurement data into a linear equation and quickly calculated the pipeline's flow rate.