查询词典 bivalves

The endemic species of Chinese freshwater bivalves are dominated by species in central part of China, Oriental realm, with a few species in Palearctic realm. The endemic species spread over 16 provinces, mainly distributed in Jiangxi, Hunan, Anhui, Zhejiang and Jiangsu provinces.

我国淡水双壳类特有种的组成和区系成分，以东洋界华中区的种类占绝对优势，仅有少数种类渗透到古北界；特有种在我国16个省有分布，但主要集中分布于江西、湖南、安徽、浙江、江苏五省。

They are important members in marine sessile communities because their leathery tunic provides habitats for other organisms, such as bivalves, polychaetes, echinoderms and other ascidians.

它们的革质外鞘可以提供其他动物附生，例如：双壳贝、多毛虫、以及其他种海鞘等都是常见附生动物。

An animal with webbed feet .gastropods; bivalves; cephalopods; chitons.

腹足动物；双壳类；头足类动物；多板类。

An international group of authors, representing a dozen countries, draw on diverse aspects of both fossil and living bivalves, including their form, functional morphology, morphogenesis, taphonomy, shell microstructure, cladistic relationships, biostratigraphic distributions, and molecular sequences.

一个作家的国际集团，代表十多个国家，借鉴和生活都双壳类化石，包括其形式，功能形态，形态，埋藏学，贝壳微结构，分支系统学的关系，地层分布的不同方面，分子序列。

There are plant stems in the middle of the concretions. The contents of fossils such as crinoids, bivalves, ammonoids and conodonts in the concretions are notably higher than those in rocks around the concretions. Many fossils are directly attached to the plant stems.

这些结核中部都有植物茎干，结核内的海百合、双壳、菊石、牙形刺等生物化石含量明显高于结核周围的岩石，且有许多生物化石直接附着在植物茎干上。

All sorts of fossils are included in the mix, ranging from fossilised plants, trees, fish, reptiles and corals to gastropods, bivalves and crinoids.

这里有各种各样的化石，从植物、树木、鱼、爬行动物和珊瑚虫，到腹足动物、双壳类动物和海百合类动物都有。

All sorts of fossils are included in the mix, ranging from fossilised plants, trees, fish, reptiles and corals to gastropods, bivalves and crinoids.

迪恩声称，与博物馆的收藏相比，这种大规模收藏不太一样，因为它是根据标本发现地、而不是类型来分类的。

Crinoids, ammonoids and bivalves dwelt on the stems and lived on pseudoplanktons. They were gradually deposited on the sea bottom with increasing biomass of the dwelling organisms and lime content, and at last concretions were formed.

海百合、双壳类和菊石类栖息在植物茎干上营假浮游生活，随着栖息生物量和化学沉积物灰泥的增加，逐渐沉积在海底形成结核。

It shows extremely close similarities to the Upper Jijicao Group in Junggar Basin in fossil assemblages such as pollen, bivalves and fossil plants, as well as sedimentary characteristics, it is adopted the same stratigraphic nomenclatures, namely Wulabo, Jingjingzigou, Lucaogou and Hongyanchi Formations in ascending order.

根据孢粉、双壳类、植物等化石组合以及沉积旋回和岩性等特征表现出来与准噶尔上芨芨槽群的一致性，采用了统一的地层名称，即乌拉泊组、井井子沟组、芦草沟组和红雁池组。

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。