民航交通灾害的发生一般由民航运输过程中外部环境突变、人为失误与飞机失控等因素相互作用所造成。
Civil aviation traffic caused by the transport environmental sudden change, fault caused by people and factor interaction out of control of plane generally.
以松辽平原为案例，首次提出并论证了“人类强胁迫力作用于脆弱环境系统必将导致生态环境突变”的命题。
Taking Songliao Plain as an example, the proposition that strong stress makes a fragile environment into catastrophe is demonstrated for the first time.
所以说，如果你并不处于疟疾环绕的环境，这个突变则只有坏处。
So if you're not living in a malaria environment, the mutation is just bad.
该理论是指突变有助于变异性而变异性则是一个物种在面对不断变化的环境时成功生存的助力。
The idea is that mutation contributes to variability and variability drives the success of a population in the face of a changing environment.
新达尔文主义的延伸观点认为，进化是随机突变伴随结构性的环境过滤，但看起来这些共识可能会改变。
The consensus view among neo-Darwinians continues to be that evolution is random variation plus structured environmental filtering, but it seems the consensus may be shifting.
他们说，自此，本来存在于人口十分之一的基因突变扩展到将近十分十九——因为基因发生突变后的人更能适应新的环境。
There, they say, the mutation that existed in under a tenth of the population spread to nearly nine-tenths-because those with it survived far better than those without.
基于突变理论，对水电站环境影响综合评价及建设方案优选问题进行了探讨。
The environment impact synthetic assessment and construction scheme optimum selection problem of hydroelectric plant on the basis of catastrophe theory is approached.
本月初北京基因组研究所发表在科学杂志上的一项研究指出，一种特殊的基因突变使得藏族人能够适应高海拔的环境。
A study led by the Beijing Genomics Institute and published in Scienceearlier this month identified a particular genetic mutation as a key to Tibetans' high-altitude adaptability.
这种互相作用，不象是环境(细胞质)中某些因素引起基因突变或基因的活化和抑制。
It does not seem that in this interaction some factors of environment (cytoplasm) lead to the gene mutation or the activation and check of the gene.
先天性白内障的病因复杂多样，约三分之一与遗传因素和基因突变有关，三分之一与环境因素有关，三分之一病因不明。
The reason of congenital cataract is multiple, about one third is related to genetic factor and genic mutation, one third is environmental factor, the rest is unknown.
由于酚的毒性大，并具有致癌、致畸，致突变的潜在毒性，近年来引起了环境研究者的重视。
Because phenolic contaminants take on great toxicity which could cause cancer, abnormality and sudden change, many environmental researchers attach importance to them.
根据近年的研究进展，从癌基因与抑癌基因的突变及环境因素的影响等方面综述了癌症的发生机理。
The occurrence mechanisms on cancer including mutation of oncogene and antioncogene, effect of environmental factors were reviewed.
TK 6细胞可用于评估环境化学物细胞水平遗传改变及TK基因突变。
TK6 cells can be used as an in vitro assay system to assess cytogenetic damage and gene mutation at tk locus of environmental chemicals.
其发生可能与病毒感染、基因突变、环境因素及其他血液系统疾病有关。
The genesis may be related to its viral infection, gene mutation, environmental agent, and other hematological systemic disease.
黑色岩系的形成反映了环境的突变事件，构成了许多重要矿床的赋矿岩系。
The presenting of black shale series reflects abrupt environmental events, which formed many important ore hosting rock series.
结论：由于地理环境、种族和生活条件的不同，相同的基因突变在不同的人群中所起的作用可能不同。
Conclusion: the same gene mutation may play different roles in different populations because of the differences of geographic environment, ethnic lines and living conditions.
提瓦那库的高地农业可以做为一个绝好的例子来说明一个复杂的社会对于边缘环境的 挑战已作出反应，但也因此易于受到气候突变的伤害。
The raised fields of the Tiwanalcu may be a good example of a complex society already responding to the challenges of a marginal environment, and therefore vulnerable to sudden climate change.
介绍了卷叶突变体的类型，并从细胞水平、激素调控、分子遗传及环境因素等方面综述了叶卷曲突变体发生的机制。
The types of rolled-leaf mutant were introduced, and the potential mechanism from the aspects of the cellular level, hormonal regulation, molecular genetics and environmental factors were reviewed.
生物科技公司耗费数年时间，试著找出适当的突变宿主生物与反应环境组合，以得到安全有效的蛋白质治疗方法。
Biotechnology companies spend years figuring out the right combination of mutant host organism and reactor conditions to fashion a protein therapy that is safe and effective.
对环境和食品造成污染，引起对人类健康的危害，如：急性中毒，慢性中毒以及致癌，致畸，致突变等，并可以恶化环境，影响生态平衡。
It will empoison environment and foods to harm human health like as acute toxicosis, chronic toxicosis, and so on. it also can depravation environment and affect environment balance.
这篇文章说，社会环境和习俗的突变造成了文化冲击。这篇文章说，社会环境和习俗的突变造成了文化冲击。
According to the passage, culture shock results from the sudden change of the social atmosphere and customs.
传统预测方法往往忽略国民经济宏观环境的影响，存在突变误差较大、抗干扰能力弱等不足。
Most of the traditional forecasting methods that ignore the influence of national economy macro-environment have the inadequacies of the unexpected errors and weak anti-jamming capability.
这项研究报道了在包含不同普通“源”细菌和充当“汇”作用的突变体诱骗细胞的混合物环境中phi - 6病毒群的成功。
"This study reported on the success of phi-6 virus populations in environments containing different mixtures of ordinary" source "bacteria and mutant trap cells that act as" sinks.
孢粉种属突变以及还原硫含量变化对水体深度比较敏感，是划分深水环境层序边界以及体系域的良好指标。
The abrupt changes in spore-pollen species and in the content of reduction sulfur are sensitive to water depth, and can be used as indicators for sequence boundaries and system tracts.
最近的研究也显示，肿瘤微环境中的纤维原细胞也会自己突变。
Recent studies suggest, too, that the fibroblasts in a tumor microenvironment begin to acquire mutations of their own.
说明该技术是监测环境致突变物的一种有效手段。
Thus it is proved that the method is effective in the research of of environmental mutagens.
方法：对10 6例散发性大肠癌患者进行多基因突变和肠道内环境中有关指标（以粪便为标本）的测定，并进行流行病学的病例-病例研究分析。
Methods:Mutations of multiple genes from 106 patients with SCC were analyzed by two multiplex PCR-SSCP systems, PCR-RFLP, and DNA sequencing.
基于对真实网络流量数据的观察，在突发异常的定义中引入持续性因子及突变性因子，以更好地描述其在真实应用环境中的特征。
Based on the observation of real network traffic data, we introduce the lasting factor and abrupt factor in the definition of burst in order to better characterize the burst in the real application.
基于对真实网络流量数据的观察，在突发异常的定义中引入持续性因子及突变性因子，以更好地描述其在真实应用环境中的特征。
Based on the observation of real network traffic data, we introduce the lasting factor and abrupt factor in the definition of burst in order to better characterize the burst in the real application.
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