使完善

The specimen was preliminary coated with carbon of 10-20 nm in thickness, then sputtered with gold of various thickness according to its shape and surface texture: a gold film of 60-80 nm in thickness for bell-jar or tower-type radiolarites, 80-140 nm for globiferous radiolarites with spines and 140-200 nm for globiferous radiolarites.

在放射虫化石表面先蒸镀一层10-20 nm厚的碳膜，然后根据放射虫化石的形态和表面结构的不同，溅射厚度不同的金膜；钟罩形、塔形放射虫化石的金膜厚度在60-80 nm，带刺的球形放射虫化石的金膜厚度在80-140 nm，球形放射虫化石的金膜厚度在140-200 nm。