parameter variation的用法和样例：
例句
- The expert system was suggested to monitor more than one cutting parameter in order to optimize the cutting process.
提出了采用专家系统来监测切割过程中多个参数变化以优化切割过程的方法。 - The effect of the process parameter on the preparation of the carbon nanotube film is discussed.
详细讨论了制备工艺参数变化对碳纳米管生长的影响。
