查询词典 vertebrates

The ability to distinguish between "self" and "nonself", while present in all animals, is most efficient among vertebrates, which have developed an immune system as their defense mechanism.

这种区分"自我"和"非自我"的能力，尽管存在于所有动物中，但最为高效的，当属那些已经进化出免疫系统并将其作为一种防范机制的脊椎动物。

Any of various small, flattened marine organisms of the subphylum Cephalochordata, structurally similar to the vertebrates but having a ''.'notochord'.

蛞蝓鱼类任一种体形较小的头索动物纲的扁平海洋动物，它们在结构上与脊椎动物类似，但只有一个''。

Follicle Stimulating Hormone and Luteinizing Hormone play a crucial role in the oogenesis and spermatogenesis of vertebrates.

可能调节繁殖蚁、兵蚁、工蚁的产生。这是首次证实FSH和LH在白蚁脑中的存在及分布，为揭示其在昆虫精子和卵子发生过程中的分子机制提供了直接证据。

The Quantou Formation of Jilin Province, People's Republic of China, has recently yielded an important new fauna of 'middle' Cretaceous vertebrates. This fauna includes the small-bodied cerapodan ornithischian dinosaur Changchunsaurus parvus, represented by excellent cranial and postcranial material.

通过对长春龙头部特征的详细研究，对比目前所发现的其他基础角足龙类材料，重新分析了角足龙类的三个演化分支（鸟脚下目、肿头龙下目与角龙下目）之间的关系，为今后基础角足龙类的系统关系研究奠定了基础。

The usually paired female or hermaphroditic reproductive organ that produces ova and, in vertebrates, estrogen and progesterone.

卵巢通常成对的雌性或雌雄同体动物的生殖器官，产生卵细胞，脊椎动物的此类器官产生雌性激素和孕激素

In the endangered vertebrates, 37% species of them are threatened by overdevelopment , and many wild animals are hunted and killed for the food material or the daily necessities and so on.

在濒临灭绝的脊椎动物中，有37％的物种是受到过度开发的威胁，许多野生动物被猎杀而做为食材或生活用品等。

Parthenogenesis occurs naturally in some species, including invertebrates and lower plants. It happens more rarely in some vertebrates.

某些生物天生具有单性生殖的能力，包括无脊椎动物和低等植物，但单性生殖在脊椎动物中较为罕见。

One of the bones of the pectoral girdle in many vertebrates.

胸衣一种中世纪外衣，尤指带花边的上衣或胸衣

A nitrogenous organic acid, C4H9N3O2, that is found in the muscle tissue of vertebrates mainly in the form of phosphocreatine and supplies energy for muscle contraction.

肌酸一种含氮的有机酸，c4h9n3o2，主要以磷酸肌酸的形式发现于脊椎动物的肌肉细胞组织中，并可为肌肉萎缩提供能量

Furthermore, TTX and its analogs were detected in several phyla of vertebrates and invertebrates.

研究发现，TTX还广泛分布于河豚鱼之外多种脊椎动物及无脊椎动物的体内或体表。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。