effective flow resistance

例句：

1. 1. The design of the new model is more effective in reducing noise pollution.
   新模型的设计在减少噪音污染方面更有效。
2. 2.The efficiency of the new machine has greatly improved our production process.
   新型机器的效率大大提高了我们的生产过程。
3. 3. The effectiveness of this method was proven through several experiments.
   这种方法的有效性通过几次实验得到了证明。