internal riser pipe

• 内部立管

internal riser pipe的用法和样例：

例句

1. Based on the calculated results, the fatigue damage by vortex induced vibration along a riser is predicted.
   在此基础上计算了立管沿长度方向涡激振动引起的疲劳损伤。
2. The backflow preventer must be supported and is not designed to carry full weight of the stand pipe.
   防回流阀必须有所支撑，不能用于承载立管的全部重量。