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.

为开发利用淮北矿区高岭,以该区朱庄煤矿煤系高岭为代表样品进行高岭的活化研究。