In this paper the sample preparation techniques of radiolarite were discussed in order to get high quality secondary electron images in SEM.

讨论了为获得放射虫化石的高质量的二次像所用的备方法。

Experimental results showed that double coats of carbon and gold on the conductive coating of radiolarite should be used.

通过多次验，认为放射虫化石的表面导处理应用碳-金双层镀膜法。