后生动物

It was there, a half billion years ago, that tiny metazoan organisms first evolved systems for sequestering and circulating fluids.

五亿年前，就是在那里，微小的后生动物首先进化成与外隔绝的循环液体系统。

Analysis of their morphologies and features leads to the conclusi on that these structures might have been in connection with metazoan activity, bu t the possibility of their abiotic origin can not be ruled out.

通过对上述构造形态和特征分析，这些构造可能与后生动物的活动有关，但也不排除它们是非生物成因的可能。

These new materials provide new evidence for the origin, evolution and the functional evolution of the metazoan during the early stage of the Cambrian explosion.

本文报道的奇异星状生物可能代表了初具原始触手的腔肠动物早期演化类型，为研究真后生动物起源演化、能进化提供了新的实证材料。

The integrated wastewater treatment system consists of three units, an integrated oxidation ditch with vertical circle for wastewater treatment, an oligochaete reactor for sludge reduction, and a combined bacterial and fungal reactor for odors removal.

项目简介：清洁型污水处理一体化系统利用立体循环一体化氧化沟去除污水中的有机污染物，同时去除氨氮、总悬浮固体；利用原/后生动物寡毛类蠕虫吞食污泥颗粒，实现污泥减量；利用细菌和真菌去除臭味气体。

The relationship between the proterozoic Era and explosive evolution of the life on the Cambrian period was preliminary explored by an Ecological and Evolutionary approach in this paper.

距今38亿年前地球最早生命诞生以来，至元古代早期第一个真核细胞开始出现；从无性分裂或出芽繁殖的原核生物到有性繁殖的真核单细胞生物以及从单细胞的原生动物到真核多细胞的后生动物的进化，无疑是生命进化过程中非常重要的事件。

On the section, the Wenghui Biota can be redivided into Globusphyton,Sectoralga-Longifuniculum,Cucullus,Beltanelliformis,and Baculiphyca- Gesinella Communities, from below to above. The change and evolution of these communities show the relation the biota and microenvironment, and indicates the relationship macro-plants with metazoans.

在时间纵向上可依次分为Globusphyton ， Sectoralga-Longifuniculum ， Cucullus ， Beltanelliformis ，Baculiphyca-Gesinella等5个群落，反映出生物群落与环境的相关性以及宏体后生动物与植物之间的相关性和规律性。

The topologic architecture of metazoan trace fossils may be subdivided into 3 clusters, 8 basic topologic configurations, 3 combined topologic configurations and 21 topoichnologic kinds, which are considered to be related to ethologic classifications of trace fossils in origin.

后生动物遗迹的拓扑结构可归并为3 族、8 种基本拓扑型、3 种组合拓扑型和21 种拓扑遗迹类，它们与习性类有较好的成因联系。

This influx of terrestrial carbon is not apparent in carbonates older than 850 Myr, so we infer an explosion of photosynthesizing communities on late Precambrian land surfaces.

这样一个产生氧和植物的事件，甚至可能要对从前寒武纪的一个实质上为微生物的世界向寒武纪的一个后生动物世界的关键过渡负间接责任。

This speculation is based on the fact that, even today, the blood serums of

五亿年前，就是在那里，微小的后生动物首先

In this study, DRG-1 was identified to be a conserved gene in metazoans and share NF-κB binding sites with its homologues in their promoters.

在本实验中，我们发现DRG-1是一个在后生动物中保守的基因，而且在同源基因的启动子区域都含有一个NF-κB的结合位点。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。