查询词典 placental mammals

The eukaryotic translation initiation factor 5A (eIF-5A) is a small acidic protein (18k Da), widely presents in all organisms from archebacteria to mammals but not in eubacteria, with highly conserved sequences. eIF5A is unique in that it is the only protein known to contain the unusual amino acid residue hypusine (hydroxyputrescine-lysine), which is essential for eIF5A function and is formed by post-translational modification of a specific lysine residue.

真核生物翻译起始因子5A(eIF5A)是一个分子量约18 kDa的酸性蛋白，其序列从古细菌到哺乳动物高度保守，并广泛存在于各种真核生物细胞中。eIF5A是迄今为止唯一一种已知含有特殊氨基酸残基hypusine的蛋白质。hypusine是一种蛋白翻译后修饰产物，它的形成对eIF5A的功能完整至关重要，相关的研究结果表明hypsine在控制细胞周期循环的过程当中扮演着一个重要的角色。

RNAi has been observed in all eukaryotes, from yeast to mammals.

RNA干扰已被发现在所有的真核生物，从酵母到哺乳动物。

Considering that fz6-related genes are consered between species, the same self-organizing system likely "applies to all mammals, and also to bird feathers and fish and reptile scale orientation," Nathans says.

考虑到fz6相关基因在种群中有保留，Nathans说，同样的自体组织系统可能&适用于所有的哺乳动物，也包括鸟类羽毛，鱼雷和爬行类鳞片的方向性。&

Nevertheless, the survey found that 93 percent of the streams and rivers with large piscivores exceeded that level of mercury deemed "protective" for fish-eating mammals.

不过，调查发现，有93 ％的河溪大piscivores超过这一水平的汞被视为&保护性&，为鱼类为主食的哺乳动物。

Mercury levels of 0.1 micrograms per gram of tissue are considered a threshold of concern for fish-eating mammals, though little research has been done on how different levels of mercury affect mink, otter and related animals.

汞含量0.1微克每克组织被认为是门槛关心鱼类为主食的哺乳动物，但很少有研究已经做了关于如何不同程度的汞影响水貂，水獭和有关动物。

Mercury levels at more than two-thirds of the sites exceeded what scientists believe fish-eating mammals, such as mink and otters, should ingest.

三分之二选本中汞含量超过了科学家们认为水貂、水獭等以鱼为食的哺乳动物可摄入的含量。

Fall, have the habits of animals hibernate body began to change, mammals began to reserve the winter food.

秋高气爽、有冬眠习性的动物身体开始发生变化，哺乳动物开始储备冬天的食品。

Every element of that skeleton is clearly homologous with structures in the forelimbs of other mammals, and there is no question that bat wings evolved as a result of modifications to the forelimbs of their ancestors.

每个要素即骨架，显然是同源性与结构，在forelimbs其他哺乳动物，并有毫无疑问，蝙蝠翅膀演变由于修改该forelimbs他们祖先的。

Arctic mammals include polar bear, arctic fox, arctic wolf, seal , and many species of whale.

北极的哺乳动物包括北极熊、北极狐、北极狼、海豹以及许多种类的鲸鱼。

This paper reports that thvrty-three Species of fur-bearing mammals have been recorded in Henan,which belong to five orders and eleven families.

据历年收购数量变动的趋势和调查访问资料分析，近年来，草兔数量呈暴发性增长。

A small, rubber-headed hammer used in examination or diagnosis by percussion.

叩诊槌用在通过''。'振荡'。''所作的检查或诊断中的橡皮头的''。'小'。''槌

Affixes are limited in number in a language, and are generally classified into three subtypes, namely, prefix, suffix, and infix, depending on their position with reference to the root or stem of the word.

语言中词缀的数量总是有限的，根据它们跟词根或词干的相对位置，一般可以把词缀分外三小类：前缀，后缀和中缀。