substantial derivative

例句：

1. 1. The company's new product is a substantial derivative ofits existing technology.
   该公司的新产品是其现有技术的实质性衍生物。
2. 2. The researchteam has identified several substantialderivatives that could be usedto enhance the performance of the device.
   研究小组已经识别出几个可以用于提高设备性能的实质性衍生物。
3. 3. The governmenthas introduced several substantial derivatives to addressthe issue of income inequality.
   政府已经引入了几种实质性衍生物来解决收入不平等问题。