graptolite的例句
1. The graptolite fauna belongs to the Zhujiang sub-form of Huanan form with typical characteristics of the Pacific graptolite fauna.
该笔石动物群属于华南型的珠江亚型，具有典型的太平洋型动物群的特点。youdao
2. The optical anisotropy of zooclast graptolite in some Paleozoic strata of China has been studied using reflectance cross-plot analysis.
应用反射率十字图解研究了中国部分地区下古生界地层中动物有机碎屑笔石的光学各向异性。youdao
3. The nature of graptolite fauna, the correlation of the graptolite-bearing strata with that in other area and the Cambrian-Ordovician boundary are also discussed.
本文还对笔石动物群的性质进行了分析，与邻区和国外相当地层进行了对比，并讨论了本区寒武系与奥陶系界线。youdao
4. The nature of graptolite fauna, the correlation of the graptolite-bearing strata with that in other area and the Cambrian-Ordovician boundary are also discussed.
本文还对笔石动物群的性质进行了分析，与邻区和国外相当地层进行了对比，并讨论了本区寒武系与奥陶系界线。youdao