为了比较陨石和太阳的成分，我们需要利用元素的比率，而不单单是原子的丰度。
To compare the compositions of a meteorite and the Sun, it is necessary that we use ratios of elements rather than simply the abundances of atoms.
角毛藻的种类丰富度和细胞丰度具有典型的季节性特征。
The species richness and cell abundance of Chaetoceros were characterized by a typical seasonal pattern.
一条线索来自于主盘内恒星的金属丰度。
One clue comes from the metallicity of the disc's constituent stars.
已有几种不同的理论对金属丰度梯度在亿万年间如何变化作了推测。
Different theories predict how this metallicity gradient changes over billions of years.
因为恒星聚集在星系的中心，其附近的金属丰度最高并沿边缘方向逐渐降低。
Because stars congregate at a galaxy's centre, the metallicity in most nearby spirals is greatest there and drops toward the edge.
这就是区域化探扫面应用丰度模型法的依据。
That is the basis of regional geochemical. exploration with abundance-model method.
协惯量分析结果表明，相对丰度与环境变量显著相关。
A co-inertia analysis showed that species abundance and environmental variables had significant relationship.
物质中不同核同位素的相对丰度能够提供更多的线索。
The relative abundance of different nuclear isotopes in the material could reveal additional clues.
海盆区粘土沉积物中的放射虫化石丰度高且分异度高。
The abundance and diversity of radiolaria fossils are high in the clay of basin.
土壤生态系统中水分和养分的丰度和有效性决定土壤的肥力。
The abundance and availability of water and nutrients in a soil ecosystem determine its fertility.
银河中心的恒星都比较古老，富集金属元素，重元素的丰度很高。
"Stars in the center of the Milky Way are old and 'metal-rich' with a high abundance of heavy elements," Bobrowsky said.
岩石学矿物学上类似的岩石，其放射性元素丰度却往往有所不同。
Petrographically and mineralogically similar rocks quite often have different concentrations of radioactive elements.
沁水煤层气田是国内已探明资源丰度最大、稳产效果最好的煤层气田。
Qinshui coal-bed gas field has the largest proved reserve abundance and the best production stabilization effects in China.
指数表示法计算的资源丰度值实现了资源丰度在可比尺度上的综合评价。
The enrichment value of resources calculated by the method of index expression could synthetically evaluate the enrichment of resources on the comparative dimension.
用热表面离子源测定了锂同位素丰度，在样品全耗尽过程中累计离子流强度。
The isotopic ratio of lithium was determined by cumulating intensity of ion current during evaporation of all samples on evaporation filament.
一些理论认为，丰度在开始时变化很大，而之后趋于平缓；另一些则与之相反。
Some theories predict it starts steep and later flattens; other theories predict just the opposite.
其REE丰度逐渐增高，轻、重稀土分馏程度表现为愈趋显著的总体演化趋势。
Their REE abundance increases progressively and their light and heavy REE fractionations also have a general evolutionary trend of becoming more and more marked.
语义技术允诺用其他的途径确保质量，即检测既定文本中遇到的概念的丰度和一致性。
Semantic technology promises other means of assuring quality, by detecting the richness and coherence of the concepts encountered in a given text.
中国陆上剩余油气资源主要分布在中低丰度岩性地层油气藏领域，勘探潜力巨大。
The remaining onshore hydrocarbon resources in China, which are distributed in lithostratigraphic reservoirs of low and medium abundance, have great potential for exploration.
因此，主盘在形成伊始有一个很大的丰度梯度，就像遥远的狮子座里的那个星系那样。
Thus, the disc begins its existence with a steep metallicity gradient, like the one in the distant galaxy in Leo.
因为我们看到的它还处于早期，这个结果表明螺旋星系主盘开始时有着很大的金属丰度梯度。
Because we see the galaxy when it was young, this result suggests spiral discs start off with steep metallicity gradients.
本文综述了从有机质丰度、有机质类型和有机质成熟度等方面评价烃源岩的历史和研究现状。
The paper reviewed the research history and the current status of hydrocarbon source rock evaluation based on organic abundance, type and maturity.
在这个模型下，一大团气体坍缩并在主盘中心形成大量恒星，它们在那里迅速增加着金属丰度。
In this model, a mass of gas collapses and creates lots of stars at the disc's centre, where the stars quickly boost the metallicity.
因此，要确定所记录的元素丰度是否代表无生命的底线情况或是生命的存在，将会是个棘手问题。
So determining whether the recorded abundances represent abiotic baseline conditions or the presence of life might prove tricky.
后者以二辉石岩为代表，具典型堆积结构，与本区尖晶石二辉橄榄岩相比，具有较高的稀土元素丰度。
The latter is representive of pyroxenite, which displays the accumulate texture and has higher REE abundance than the Sp-lherzolite from the region.
本文简介了丰度模型、齐波夫律、特征分析、信息量与隶属函数等方法，并对其中某些方法有所改进。
In this paper, several methods such as abundance pattern, Zipf's Law, characteristic analysis, information content and subordinate function are briefly introduced and Some of them are improved.
本文简介了丰度模型、齐波夫律、特征分析、信息量与隶属函数等方法，并对其中某些方法有所改进。
In this paper, several methods such as abundance pattern, Zipf's Law, characteristic analysis, information content and subordinate function are briefly introduced and Some of them are improved.
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