古生代的

The results of this research will include setting up the diagnostic criterions, classification system and its matched diagenetic model of carbonate exposed unconformity and relative sea-level fluctuation.

该项目的实施有助于了解早古生代华北板块的构造-沉积演化，并为相关油气资源的勘探和开发提供重要科学依据。

Bedded cherts, with varying thickness, are widely distributed in some typical eopaleozoic high Se black shales in China.

在中国早古生代若干高硒黑色岩系中发育有数层的厚度不等的层状硅质岩，SiO2 含量一般在 90 %以上，岩石富Fe ，相对贫Mn、Al、Ti。

Besides,Qaidam granitoid in the ZWL belt western also be discussed,it belong to granitoid emplaced in the late orogenic Eopaleozoic.

此外，还对出露于宗务隆带西段的柴达木花岗岩进行了讨论，它属于早古生代造山后侵位的花岗岩。

Paleontologists believe they are the most primitive jawed vertebrates, even predating sharks.

经常被称作&海里的恐龙&的盾皮鱼在古生代统治着海洋长达7千万年，直到3.60亿年前灭绝。

Do you want to hear the original versions of Spira Mirabilis

你想要听原版的神奇剧场产卵器和体内的古生代吗？

After the collage of North China and Sibiric slab at palaeozic later period, Yanbian region is involved in the pacific tectonic province.

晚古生代华北板块和西伯利亚板块的南北向拼合之后，延边地区的区域构造背景进入了太平洋构造域。

After the Precambrian Era, such marine invertebrate animal as trilobites, achiopods, nautiloids, horn corals, honeycomb corals and twiglike bryozoans were abundant during the Palaeozoic Era.

在前寒武纪之后的古生代，是无脊椎动物的繁衍时期，例如三叶虫、腕足类、头足类、角状珊瑚、蜂巢珊瑚和苔藓动物。

Tall Paleozoic trees superficially resembling modern screw pines; structurally intermediate in some ways between cycads and conifers.

一种高大的古生代树木，外表与现代的露兜树相似；结构上介于苏铁和针叶树之间。

During the Neoproterozoic to the Early Paleozoic, the South China was a marginal basin captured by the Yangtze active continental margin, filled with very thick flysch, sandstone, and shale sediments.

华南新元古代到早古生代是扬子活动大陆边缘构造&捕获&的一个边缘海盆地，其间充填了巨厚的复理石、砂、页岩沉积。

The main fragment source and source areas component of Xiangshan Group sandstones are Precambrian metamorphic-sedmentary rock and granite-gneiss.

目的 探讨鄂尔多斯西南边缘香山群形成的大地构造环境，为鄂尔多斯盆地西南缘早古生代大地构造背景的恢复和确定提供佐证。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。