improved control scheme的用法和样例：
例句
- At last, the optimistical design of the parameters of the crankshaft was studies and improved schemes are put forward.
最后探讨了曲轴结构参数的优化设计，提出了改进方案。 - An improvement scheme about the Integrated oxidation ditch is obtained, for example big energy consumption and uneven flow velocity and so on.
分析氧化沟中流态分布的不均，而造成能耗过大，以及处理过程中的缺陷和不足，提出针对现在的一体化氧化沟的改进方案。
