frictional loss的用法和樣例：
例句
- Friction losses in the equivalent lengths of ducts constitute the pressure loss in the elbow.
管道的等量長(cháng)度中的摩擦損失即構成彎管中的壓力損失。 - Longer distances may, however, require recompression to compensate for friction losses during pipeline transfer.
不過(guò)，運輸距離較長(cháng)時(shí)，有可能需要再次加壓，以補償管線(xiàn)輸送過(guò)程中的摩擦損失。
