or derivatives thereof

• 或其衍生物

or derivatives thereof的用法和样例：

例句

1. It is applicable to substances or their derivatives which are volatilized under the temperatures employed.
   气相色谱法适用于在运用温度下挥发的物质或其衍生物。
2. The pesticide products of diketene produced by direct synthesis or biosynthesis were introduced.
   介绍了由双乙烯酮直接合成或由其衍生物合成的农药品种。