flow straightener的用法和樣例：
例句
- The rectifier lets current flow into the battery only when A.C. surges in the direction of the arrow.
只有當交流電流沿箭頭方向急沖時，整流器才允許電流流入電池組。 - The numerical simulation was introduced to study the flows in a natural gas pipeline.The flow fields in a diffusive pipeline with different rectifiers were computed as examples.
首次採用數值模擬方法，以加帶擴散管的管路為例，對其在加裝不同整流器時的管內流場進行計算。
