Chemical reactions are the basis of chemical evolution.
无处不在的化学反应是化学进化的基础。
The chemical evolution of galaxies is a long-interesting problem for astrophysicist.
星系化学演化也是天文学者一直关心的问题。
It is very significant to Ba stars for heavy-element nucleosynthesis and Galactic chemical evolution.
钡星对于重元素核合成及星系化学演化的研究都有非常重要的意义。
The origin of life is thought to start at the transit from chemical evolution into biological evolution.
生命起源开始于从化学进化进入生物进化。
By further analyzing the meteorite, researchers hope to understand its chemical evolution and create a timeline of the chemistry of our universe.
科学家们希望通过进一步分析这块陨石能了解其化学演变，并为我们宇宙的化学制出一条时间轴。
The major current hypothesis holds that life arose spontaneously on the early earth by means of chemical evolution from nonliving substances.
主要的电流的假说是生活在早期就自然地通过化学演化的物质从生物。
Analysis about the abundance in different stellar populations is a very important subject in study of the structure and chemical evolution of the Galaxy.
恒星元素丰度是探讨银河系化学演化的重要探针，分析不同星族成分的元素丰度是研究银河系结构和化学演化的重要课题。
The chemical evolution of life and the early evolution of the earth's lifeless components constituted a set of interrelated, interactive and restricted processes.
地球上生命的化学进化与非生物部分的早期演化过程，是密切地相互关联、相互作用并相互制约的。
The difference in average composition between the rocks of two different geologic ages provides the important evidence for the actual occurrence of chemical evolution.
两个地质时代岩石平均成分的差异，是化学演化真实存在的重要证据。
According to the conventional hypothesis, the earliest living cells emerged as a result of chemical evolution on our planet billions of years ago in a process called abiogenesis.
根据传统的假说，最初的活细胞，肇生于数十亿年前地球上的化学演化过程，这种说法称为无生源说。
The abundances of neutron-capture elements in metal-poor stars, tightly related to the star formation and evolution, provide important clues to the chemical evolution of the Galaxy.
贫金属星的中子俘获元素丰度与恒星的形成和演化密切相关，它为研究星系形成早期的历史背景和化学演化提供了重要信息。
Mafic igneous rock, a widely distributed and typical mantle-derived rock, has become a major research source for revealing possible mechanisms for the chemical evolution of the mantle.
镁铁质火成岩作为分布最为广泛的典型幔源岩石，已成为探索地幔化学性状及示踪岩石圈深部过程的主要研究对象。
By studying the star formation history and chemical evolution of M31. and comparing with the Milky Way Galaxy, we are able to understand more about the formation and evolution of spiral galaxies.
在理论上研究其形成和演化历史，同时与银河系进行比较将非常有利于进一步理解旋涡星系的形成和演化过程。
Is it just evolution or are there physical and chemical forces at work?
到底是进化还是物理和化学作用的结果？
“This is the first example of an artificial chemical system capable of Darwinian evolution, ” says Steven Benner, the research leader.
“这是首例有能力进行达尔文式进化的人造化学体系，”研究领导者史蒂文·伯纳(StevenBenner)说。
"This is the first example of an artificial chemical system capable of Darwinian evolution," says Steven Benner, the research leader.
“这是首例有能力进行达尔文式进化的人造化学体系，”研究领导者史蒂文·伯纳(StevenBenner)说。
For astrobiologists, life is defined as a chemical system that undergoes Darwinian evolution.
对于天体生物学家来说，生命是作为化学系统来定义的，这符合达尔文的进化论。
Characteristics of Diagenetic evolution of clastic reservoir in the upper and middle Jurassic in Qiangtang basin are studied using data from chemical examination and reservoir measurement.
运用分析化验、储层测试等多种资料，对羌塘盆地中上侏罗统碎屑岩储层的成岩演化特征进行了研究。
And according to the mineral composition, chemical composition and trace element content, the evolution series of the magma is redefined.
并依据各单元的矿物成分、化学成分、微量元素含量的变化，重新厘定了岩浆的演化顺序。
Based on the analysis and research of AGB granite rock texture, mineral composition, chemical components, we explore the evolution of granitoids and tantalum lithium deposits relationship.
从雅山花岗岩岩石结构构造、矿物成分、化学成分等变化规律分析研究入手，探讨雅山花岗岩类的演化与钽锂矿床成生关系。
Insects keyed into this system of chemical relationships between related plant species very early in their evolution.
昆虫在它们进化的过程中很早就已楔入在相近植物物种间的化学关系的系统之中。
Evolution of chemical matter and its level classification are not two irrelevant problems but two aspects of a problem.
化学物质的进化和化学物质的层次分类，是一个问题的两方面，而不是两个不相关的问题。
Thus the results of modeling of water-rock interaction are conducive to revealing the evolution mechanism of the groundwater chemical environment in the study area.
可见水-岩作用模拟结果有助于揭示研究区地下水化学环境的演化机制。
The composition of exchangeable cation and the soil nutrient content can be used as the indexes to evaluate soil chemical fertility evolution, especially the former is more important.
交换性阳离子组成、养分全量及速效含量可作为评价红粘土红壤化学肥力演化的指标。
Based on field survey and indoor experiments, the paper mainly researches the evolution of groundwater chemical field in time and space in Guanzhong Basin and related environmental problems.
本文在野外调查与室内试验的基础上，重点研究了关中盆地浅层地下水水化学场时空演化及其相关环境问题。
It describes a chemical system that can be built, and once it's built, you can watch the origin of evolution.
它描述了一个能建立的化学系统，而一旦这个系统得到建立，你就能看到演化的起源。
Mass transfer modeling is of importance to many research fields such as transport and evolution of pollutants, chemical dissolution of rock, water quality of...
水-岩土体系质量传输模拟在岩土中污染物的迁移转化、岩土化学淋滤、地下水水质的形成与演化及热水成矿等众多研究领域具有重要意义。
Moreover, chemical equilibrium calculation predicted the tendency of mercury evolution under the same experimental conditions.
通过热平衡计算预测了在和实验相同条件下汞析出的变化趋势。
Generally, the oxygen reduction and evolution is a two-electron chemical reaction.
讨论了氧还原和氧析出时的电化学反应机理。
Generally, the oxygen reduction and evolution is a two-electron chemical reaction.
讨论了氧还原和氧析出时的电化学反应机理。
应用推荐