representative sample

We have a representative sample.

我们有一个代表性的样品。

For the purpose of the development and utilization of the argilla re sources in Huaibei, the activation of coal-argilla taken from Zhuzhuang coal mi ne was studied as representative sample.

为开发利用淮北岭资,朱庄煤煤系岭为代表样品进行岭的活化研究。