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...
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...
这是慢性地摧裂心肺的力量 啊 !It's slow and yet searing psychic force!这些企业总是在麻烦, 慢性地透支, 慢在支付票据, 和最终将折叠.These businesses are always in trouble, chronically overdrawn, slow in paying bills, and will eventually fold....
I can change my life minute by blurting out book.脱口而出这本书,我就能够改变我的人生.The world is tired of the death blurting out or muttering again and again.这些辞就是一堵墙.Just listen, imitate and practice and you'll be blurting out bea...
The beltless machine, sometimes called a " fixed " orifice pasting machine.无带式涂片机, 有时称为 “ 定位 ” 出口涂片机.Methods: The root canalroot canal orifice burs and helical drilling bits were prepared in advance.方法: 采用根管口台阶状车针与螺旋型根管钻...
同时, 可食性包装及天然可分解性塑料的进一步开发和研制,离不开高科技的发展.At the same time, edible packaging and natural the further development and research from high - tech industry.本文介绍了生物分解性纤维所用的树脂 、 生产方法及应用.This paper introduces the resins used, produ...