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...

Lebanese pizza topped with minced meat onion and pine nuts.顶部配以鲜嫩的小牛肉,洋葱和松仁,松软可口.Soon afterwards they boarded a Lebanese - owned cargo ship, MV Sea Horse.不久之后,他们又登上了一艘黎巴嫩籍的货轮, 海马号.Lebanese sources said that 48 Lebanese c...

finicky的音标：finicky的英式发音音标为：['fɪnɪki]finicky的美式发音音标为：['fɪnɪki]...

guests的音标：...

probed的音标：...

“河湾”的拼音为：hé wān...

atrium的音标：atrium的英式发音音标为：['eɪtriəm]atrium的美式发音音标为：['etriəm]...

gashouses的音标：...

drooling的音标：drooling的英式发音音标为：[dru:lɪŋ]drooling的美式发音音标为：[drulɪŋ]...

这首乐曲的序曲很长.The prelude to the musical composition is very long.这段乐曲的乐章不怎么连贯.The movements of this piece of music somehow don't fit together.乐曲的音量减弱了,专题新闻广播开始了.The music faded down and a special news broadcast began....

in back of的音标：in back of的英式发音音标为：[in bæk ɔv]in back of的美式发音音标为：[ɪn bæk ʌv]...

“娱乐消遣是每个国民都能享受的事，”她坚定地说。"Enter-taining is something that everyone in the country can enjoy," she averred.“水手”是供台球玩家和酒徒消遣的酒吧。The Seaman was a bar for pool players and hard drinkers.我读书消遣。I read for pleasure....

Like most of Jupiter's moons, Amalthea rotates synchronously; its long axis is pointed toward Jupiter.像大多数的木星卫星, 木卫五同步自转, 它的长轴直指木星.The motor of this cargo winch rotates too quickly. It needs readjusting.这台起货机的马达旋转太快...

Boeing的音标：...

Conventional equipment such as mixing funnels, pumps, solids eductors and the like can be employed.常用的设备,例如混合漏斗 、 泵 、 固体引射器等,都可使用.Use a 3 amp fuse for equipment up to 720 watts.功率不超过720瓦的设备用3安培的保险丝。I want to know the mag...

n.十八岁（eighteen的复数形式）...