• The question is not regarding the validity of speciation.

    这个问题与物种形成论的正确性无关。

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  • This is closer to biology, especially with speciation, how two distinct species form from one.

    它更接近生物,尤其是物种的形成,也就是一个物种如何形成两个截然不同的物种。

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  • This division set the stage for allopatric speciation among populations of fishes and other marine species.

    这种划分为鱼类和其他海洋物种的分区物种形成奠定了基础。

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  • Since at least Darwin time, biologists have been trying to understand and define the mechanisms for speciation.

    至少从达尔文时代开始,生物学家就一直在试图理解和定义物种形成的机制。

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  • Charles Darwin, the first to describe the role of natural selection in speciation, wrote about the mechanisms of speciation.

    查尔斯·达尔文是第一个描述自然选择在物种形成中的作用的人,他描写了物种形成的机制。

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  • Allopatric speciation can also be brought by the imperceptibly slow but colossal movements of the tectonic plates that make up Earth's surface.

    构成地球表面的那些构造板块极其缓慢但剧烈的运动,也可能导致异地物种形成。

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  • Given the extraordinary diversity of life on the planet, there must be mechanisms for speciation: the formation of two species from one original species.

    考虑到地球上的生命的非凡多样性,一定存在着形成物种的机制:从一个原始物种演变为两个物种。

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  • Some researchers have argued that speciation rates, both terrestrial and marine, could be much higher in the tropics, making them a "cradle" of biodiversity.

    一些专家认为,在热带地区的陆地和海域,物种形成的机率更高,这样就使热带地区成为了生物多样性的摇篮。

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  • Reinforcement is required for both parapatric and sympatric speciation.

    对于领域性的和同域性的物种形成,强化是必需的。

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  • Inorganic iodine speciation in tropical Atlantic aerosol.

    热带大西洋气溶胶里无机碘物种形成。

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  • This paper presents an artificial neural network for the speciation of Chromium.

    提出了用神经网络方法测定无机铬的形态。

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  • This paper reviewed studies on cryptic species and speciation in Marine holoplankton.

    本文就海洋终生浮游生物隐种与物种形成的研究作一综述。

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  • Then, sometime between 1.3 million and 2 million years ago, carnation speciation exploded.

    然后,大约是在1300,000年至2000,000年前,石竹科物种形成爆发了。

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  • 2005 was also a standout year for researchers studying the emergence of new species, or speciation.

    2005年也是研究新物种出现,或称物种形成,的科学家们作出杰出工作的一年。

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  • Objective:To develop some methods for arsenic speciation analysis which are suitable for sea animals and seaweeds.

    目的:针对动物类海产品、藻类样品,建立相应的砷形态分析方法。

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  • The prospect and problems of speciation analysis of trace element in Traditional Chinese Medicine were also discussed.

    探讨了中药中微量元素形态分析方法的前景及存在的问题。

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  • Copper speciation in water and copper adsorption quantity on fish gill surface were calculated by a Biotic Ligand Model.

    用生物配位模型计算了铜在水相的形态分布和在鱼鳃表面的吸附量。

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  • What's more, the work suggests that some duplicate genes play a key role in the evolution of new traits and in speciation.

    并且,研究工作表明,一些复制的基因在新的特征进化和物种形成过程中起到非常重要的作用。

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  • The recent development of speciation analysis of trace elements in medicinal plants is reviewed, the prospect is also discussed.

    评述了药用植物中微量元素形态分析的现状,并对其发展前景作了展望。

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  • Often cited examples of sympatric speciation are found in insects which become dependent on different host plants in the same area.

    经常提到的同域物种形成实例,是在同一地区的、依赖于不同寄主植物的昆虫中发现的。

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  • Meanwhile, this research also tested the mercury speciation emission from a 600mw utility boiler with Standard Ontario-Hydro Method.

    此外,本文还采用安达略水法对某600MW燃煤锅炉的形态汞排放进行测定及研究。

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  • The study on elemental speciation in airborne particulate matter (PM) is important for its evaluation of toxicity and source of pollution.

    大气颗粒物中元素的种态研究,对评价其毒性和污染来源等有很重要的意义。

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  • Effects of acidity on copper speciation in soil solution and relations of copper forms with ryegrass growth and copper uptake were studied.

    研究了酸度对土壤溶液中铜形态的影响以及不同形态铜与黑麦草吸收及其生长的关系。

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  • Speciation is a popular research in the field of modern environmental analytical chemistry, in which organometallic speciation is spectacular, especially.

    形态分析是现代环境分析化学领域的一个热门研究方向,有机金属化合物形态分析尤其引人注目。

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  • Indeed, many think that regulatory changes are at the heart of speciation and may have played a large role in the evolution of humans from their predecessors.

    确实,许多人相信调控方面的变化处于物种形成的核心,可能在人从其祖先的进化历程中扮演了一个重要角色。

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  • Distribution characteristics of the heavy metal species in soils were studied by speciation analysis of heavy metals in the soils near Cu Fe tailings in Daye.

    通过对大冶铜绿山铜铁矿尾矿库周围土壤中重金属形态分析实验,研究了重金属各种形态在土壤中的分布特征。

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  • Their molecular clock data suggest a much earlier speciation, perhaps prompted by the breakup of the ancient supercontinent of Gondwana around 120 million years ago.

    他们的分子钟数据证实更早的时候就出现了物种分化,可能是1亿2千万年前冈瓦纳古陆的破裂引发的。

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  • Surface sediments were sampled from the mangrove wetland in Quanzhou Bay to study the distribution, speciation, and bio-availability of mercury in the sediments.

    采集了泉州湾红树林湿地表层沉积物样品,测定了沉积物中不同形态汞的含量,研究了汞的分布特征、赋存形态及其生物有效性。

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  • Surface sediments were sampled from the mangrove wetland in Quanzhou Bay to study the distribution, speciation, and bio-availability of mercury in the sediments.

    采集了泉州湾红树林湿地表层沉积物样品,测定了沉积物中不同形态汞的含量,研究了汞的分布特征、赋存形态及其生物有效性。

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