effective Reynolds number

例句：

1. 1. The new policy is expected tobe effective in reducing pollution.
   新政策预计将有效减少污染。
2. 2. The manager's suggestionwas very effective in solving the problem.
   经理的建议非常有效地解决了这个问题。
3. 3. Thenew software is expected tobe effective in improving efficiency.
   预计新的软件将提高效率。