往往对股权资产组合规模有个自然限制：如果资产规模过大，那就有点类似昂贵的指数型基金。
Often, there is a natural limit to the size of equity portfolios: if they become too big they start to resemble expensive index funds.
但事实上，对环境而言，所有肉食的生产所需资源是谷物和豆类生产的指数倍，此问题曾在几月前奥杜邦协会(AudubonSociety，美国一保护野生动物和自然资源协会，译者注)的杂志上讨论过。
But in fact, environmentally, all meat requires exponentially more resources to produce than eating grains and beans, as eloquently discussed in the Audubon Society's magazine a few months back.
Malthus论证说，自然群体的数量是呈指数级增长的，而食物供应的增加却是呈线性的。
Malthus argued that natural populations grow at an exponential rate, whereas the increase in food supply is linear.
在生态学的理论基础上，利用定性分析与景观综合评价指数法的定量分析相结合的方法对福建省茫荡山自然保护区的森林景观进行综合评价。
In this paper, based on the theory of ecological which using the qualitative analysis and landscape evaluate index sign system evaluated the forestry landscape of Fujian Mandangshan Nature Reserve.
基于扩展残存资源量法，提出一种根据分年龄组渔获量以及资源量指数(单位捕捞努力量渔获量，CPUE)求算鱼类的自然死亡系数(M)的新方法。
A new method for estimating fish natural mortality coefficient (m), based on the extended survivors method, using a catch-at-age data and an abundant index (catch per unit effort, CPUE) was proposed.
结果表明：通过自然对流指数确定的临界高度可为寒区工程的路堤设计提供参考。
The result shows that the critical heights based on the natural convection index can refer to design of embankment in cold regions.
自然伽马指数通常由自然伽马或其它测井曲线计算得到。
The gamma ray index is usually computed from a well log such as a gamma ray log.
事实上，由中央情报局的书籍资料，印度生产约36亿美元的石油(阿自然资源指数2003年)吨，将面临资源问题很快。
By the data from CIA fact books, India produced around 36 million tons of oil (a natural resource index) in 2003 and will face the resource problem soon.
组建了以作用因子为组分的夏季自然种群生命表，并运用排除作用控制指数法分析了各种因子对假茎象甲自然种群的作用。
The active factor life tables of BPW natural population were constructed. The controlling effect of active factors was evaluated by using exclusion index of population control (EIPC).
根据这些指数的变化情况，分析凉水自然保护区的景观要素结构的变化情况。
Comparing the dynamics of the indexes of three periods, systematically analyses the dynamic of the landscape spatial structure of LiangShui Natural Reserve.
由于采用的是最自然的指数曲线，所以我们的线路可以不需要高线性度的元件，因而降低了设计上的难度。
By utilizing the inherent exponential curves, high-linearity components are not necessarily required and the design efforts are relaxed.
构建森林自然资本指数需分别构建其数量指数和质量指数，其中质量指数的构建是难点。
To construct forest natural capital index, it is needed to construct its quantity index and quality index respectively, and the latter is more difficult.
三亚以其空气质量致胜，大连的城市安全与自然环境指数较高，而威海以其自然与文化环境跻身前五。
Sanya wins for its air quality and Dalian performs well in city safety and natural environment. Weihai, meanwhile, cracks the top five due to its natural and cultural environment.
空调办公环境的照度、正负离子评价指数及细菌总数均低于自然通风办公环境（P< 0.01）；
The illumination, assessment index of positive and negative ions and total bacteria in office with air-conditioner were lower than those of natural ventilation office (P< 0.01).
目前的数学理论和计算实践显示，自然语言处理所需要的时间随输入信息的复杂度呈指数增长。
The current mathematic theory and calculation practices indicate that the time needed to process language information increases with the complexity of the input information exponentially.
本文建立了扎龙国家自然保护区苍鹭营巢的最适生境选择指数模型。
The habitat suitability selection models were established for nesting of Grey heron(Ardea cinerea)in Zhalong National Nature Reserve.
采用变换矢栅转换过程中像元尺度的方法，对福建省武夷山自然保护区景观格局指数的尺度效应进行分析，并利用分维数方法选取最佳的像元尺度值。
Using a changing pixel scale method in translating vector images to grade images, the effect of scale on landscape pattern indices for the Wuyishan Nature Reserve was studied.
用暖池指数研究了热带西太平洋暖池对中国降水和沿海自然灾害的影响。
The impacts of Tropical Western Pacific Warm Pool on precipitation of China and disasters in China's coastal region have been discussed by using Warm Pool Index.
此时，推出股票指数期货的现实意义自然极为重要。
At this time, the introduction of stock index futures certainly has an important realistic significance.
此时，推出股票指数期货的现实意义自然极为重要。
At this time, the introduction of stock index futures certainly has an important realistic significance.
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