Since hydrogen forms covalent compounds with most nonmetallic elements, most of the hydrogen on Earth exists in molecular forms such as water or organic compounds.
发现一种对预期用途有效的药物绝非易事,但一切皆源于分子的形状和行为。
Discovering a drug that is effective for its intended purpose is no simple feat, but it all starts with the shape and behaviors of molecules.
确切的化学位移值取决于分子的结构、溶剂、温度及该NMR分析所用的磁场强度及其他相邻的官能团。
The exact value of chemical shift depends on molecular structure and the solvent, temperature, magnetic field in which the spectrum is being recorded and other neighboring functional groups.
Generally, the carbohydrate portion of the glycolipids found on the surface of plasma membranes helps these molecules contribute to cell- cell recognition, communication, and intercellular adhesion.
Researchers use particle accelerators to make X-rays and ultraviolet light to study the structure of molecules and viruses and even make movies of chemical reactions.
Using polymerase chain reaction(PCR) techniques, commonly used in molecular biology, helps them more easily identify the zip codes they are looking for.
该频率也依赖于试样分子间的相互作用、固体的晶体结构,以及各种环境因素(比如温度、压强,电磁场)。
The frequencies will also depend on the interactions between molecules in the sample, the crystal structure in solids, and on several environmental factors(e.g., temperature, pressure, electromagnetic field).
In addition, the Penal Code contains general criminal offences and related provisions concerning parties, attempts etc. that also apply to criminal acts committed by terrorists or associated persons.
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