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...
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...
位于伦敦的英国外交部对这些说法表示惊讶.The Foreign Office in London has expressed surprise at these allegations.把手位于车门之外。The handles stand proud of the doors of the car.这些岛屿位于千岛群岛的南端。The islands lie at the southern end of the Kurile chain....
Objective : To investigate the effect of morphine on purine nucleotide catabolism and the mechanism.目的: 研究吗啡依赖及戒断对嘌呤核苷酸分解代谢的影响与作用机制.Intracellular PHB depolymerase and 3 hydroxybutyrate dehydrogenase catalyze the initial ...