covalent是什么意思？

Halogen bond is known as a kind of non - covalent intermolecular interaction.卤键是一种类似氢键的分子间弱相互作用.Chemical bond mainly includes electrovalent bonds , covalent bonds, and metalic bonds.化学键主要有离子键 、 共价键 、 金属键.Additionally, co...

covalent的音标：covalent的英式发音音标为：[ˌkəʊ'veɪlənt]covalent的美式发音音标为：[ˌkoʊ'veɪlənt]...

In covalent bonding, atoms share electrons.在共价键联中, 原子共有电子.Crystals may be classified as either ionic or covalent by analogy with molecules.与分子的情况一样,晶体也可以分为离子键型和共价键型.Ceramics primarily have ionic bonds, but covalent bondi...

grizzle的现在进行时为：grizzling...

thyroids的音标：...

算出那些比率的平均值再乘以100。Take the average of those ratios and multiply by a hundred.4乘以6等于24.Four times six is 24.4乘以2等于8。Four twos make eight....

n.中胚叶外侧板，（中胚层）下段...

Please leave a space between the lines for the necessary corrections.在行与行之间要留出间隙,以便作必要的修改.Readers are requested to make the corrections pointed out in the errata.要求读者根据勘误表匡正.The teacher interlined corrections on the stud...

Two days later, they implanted the fertilized eggs back inside me.两天以后，他们把受精卵重新植入了我的体内。The fertilized eggs are taken from the cow five or six days later.五六天以后,便可以从母牛体内取出受精卵.Derived from two separately fertilized eggs . U...

Daytime sleepiness appears to be the new normal for adolescents.白天睡觉似乎在青少年中成为了一种新的睡眠形式.They also reported less sleepiness and were better at logical reasoning.报告还称,睡午觉的人不爱犯困,而且在逻辑推理方面更出色.be dull with sleepiness因困倦而迟钝The ...

lacticemia的音标：lacticemia的英式发音音标为：[læktɪ'si:mɪə]lacticemia的美式发音音标为：[læktɪ'simɪr]...

总统将这场灾难说成是天灾。The President described the disaster as an act of God.当时人们还曾迷信地认为,它的一出现就会有天灾.At that time it was believed that its appearance foretold disaster.“ 万一着火或是发大水.”她解释道, “ 或是什么天灾啦. ”" In case there's a fire or...

jumbogroup的音标：jumbogroup的英式发音音标为：[dʒʌmbəʊɡ'ru:p]jumbogroup的美式发音音标为：[dʒʌmboʊɡ'rup]...

“灿然”的拼音为：càn rán...

worries的音标：worries的英式发音音标为：['wʌrɪs]worries的美式发音音标为：['wʌrɪs]...

“古物”的英语可以翻译为：ancient objects，antiquities，archaeology，archeology，antique ...

sarongs的音标：...