A new formula, which is applied to the calculation of valence covalent radius of the transition metal elements, is presented.

In this paper, we give a experiential calculating formula of atomic covalent radius, the results are satisfied.

本文给出了一个计算原子共价半径的经验公式，其计算结果与实验值基本相符。

He's famous for a lot of things, one of which is covalent bonding.

他有许多著名的发现，其中一个便是共价键。

Well, with covalent bonding, it's not so simple.

但对于共价键就没这么简单了。

Synthesis of The Functional Resin Using to Covalent Bonding to Protein

一种能与蛋白质进行共价键合的功能树脂的合成

My new house is to have nothing Gothic about it, nor pretend to call cousins with the mansion-house.

我的新房子绝非哥特式亦称不上大厦。

The specialization of male morphological structures in courtship behavior and mating behavior of 5 tribes, 13 genera, 34 species were discussed.

列举了芫菁亚科5族13属34种芫菁的性行为，并讨论了雄成虫在形态构造上对求偶和交配行为的适应性行为。

Any of numerous small bright-colored birds of Central and South America having short bills and elaborate courtship behavior.

产于中美洲和南美洲的多种色彩斑澜的短喙小鸟，求爱行为复杂。

Courtship behavior is an instinct in animals and plays a very important role in reproduction.

求偶行为是动物的一种本能，是动物繁殖的一个重要环节。

Courtship behavior has many functions.

求偶行为还具有多种功能。

This contact may help to maintain order within a group, and stroking or touching are part of the courtship ritual in most species.

这个接触帮助保持一个群体中的秩序，并且抚摸或碰触早大多数种群中是求爱的一部分。

A woman for example might" play hard to get," a courtship ritual that her ancestors used, too.

例如，女人可能会“尽力去得到”。这也是她祖先曾经历的求婚仪式。

These aquatic birds might just have the most famous courtship ritual of them all!

这些水生鸟类也许拥有了一切最为出名的求婚仪式！

The trip typically involves travel to distant webs and an extended courtship ritual.

整个过程包括走到远处的蜘蛛网和长时间的求婚仪式。

Sharing meals has always been an important courtship ritual and a metaphor for love.

“同饮共食”一直以来都是一个重要的求爱礼节与爱情象征。

Courtship display behaviour of cabot's Tragopan

黄腹角雉求偶炫耀行为

The courtship display of Syrmaticus humiae was divided into two types: the frontal courtship display and the side courtship display.

黑颈长尾雉求偶炫耀行为分正面求偶炫耀和侧面求偶炫耀。

The courtship display bhaviour of Cabot's Tragopan is of typical frontal displays.

黄腹角雉雄鸟的求偶炫耀为典型的正面型。

Courtship Display of Nycticorax nycticorax in Zhengzhou, China

郑州地区夜鹭的求偶行为

This article illustrates briefly the initiative, diversity of birds' courtship display behaviour and its biologic significance.

扼要概述了鸟类求偶行为的主动性、多样性及求偶行为的生物学意义。

Birds' Courtship Display Behaviour and Its Biological Significance

鸟类的求偶行为及其生物学意义