查询词典 boundary value problem

"The reason we're losing natural capital is because it's free," says Ed Barbier, noting that we often think of conservation in terms of its costs rather than its value, and regard manufactured goods in terms of value rather than their environmental costs.

Ed Barbier认为我们经常从自然的损耗而不是它的价值来考虑保护环境，而对于制成品，我们考虑的是它的价值而非它对大自然的损耗。

According to the model, the deflection and main pre-brace parameters are illustrated with the Jinsong station of the tenth line in Beijing. It demonstrates that the curve shape of theoretical result, computing result and the on-set measure result are uniform in the main and the change law is similar; that the circumferential space of pipe-roof has a optimum value while satisfying the pre-brace function; that the relation between diameter of steel pipe and flexibility of barrel vault meets negative exponential function. And the diameter of steel pipe has a optimum value.

依据该模型，以北京地铁10号线劲松车站管棚支护为例，着重对管棚的挠度和主要支护参数进行的分析表明：理论结果与计算结果和现场量测结果的曲线形状基本相同，变化规律相似；在满足预支护作用的同时，存在相对较优的管棚环向间距；钢管直径与管棚挠度之间符合负指数函数关系，管径存在最佳值。

The pH value of soil was the major environmental factor impacting the Longspur epimedium growth in the Jincheng Mountain Forest Park in the Jialing River Basin and the appropriate range of pH value was 5.73-5.83. Thus, it should be paid particular attention to in cultivation practice.

结论］土壤pH值是影响嘉陵江流域金城山森林公园淫羊藿生长的主要环境因子，它会对淫羊藿的生长构成较大影响，其适宜的范围为5.73~5.83，在淫羊藿的栽培实践中应特别加以注意。

Environment-friendly bast fiber film is buried in the ground floor of different soil pH value to study degradation and changes in the type and quantity of micro-organisms, to explore environment-friendly bast fiber film degradation relevance between micro-organisms and soil pH value. There are three types of soil, for example, weak acid soil, neutral soil, weak alkaline, in which film is buried. It is to determinate of weight loss and changes of quantity of micro-organisms around.

为了探明麻地膜降解性能与土壤pH和土壤微生物的相关性，利用生石灰调节土壤pH，将土壤pH调节为弱酸性、中性、弱碱性3个不同的水平，将麻地膜埋入3种不同的土壤中，定期测定其失重率及其周围土壤微生物种类和数量的变化。

Finishing calculation of mean value, standard deviation, skewness, kurtosis of Beta distribution.(2) Fitting parameters of many kinds of typical distribution and using residual deviation to evaluate fitting precision.(3) Using Beta distribution as an agreed indication distribution applied to many kinds of practical photoelectric measurement distributions.(4) Deriving theory formula of Bayes point estimation about Beta distribution parameters and mean value and standard deviation on the condition of mean square error loss function and supposed the prior distribution is uniform distribution.(5) Generating MCMC sample from post distribution by the method of Gibbs sample algorithm. Calculating bayes point estimation from sample on the condition of mean square error loss function. Calculating confidence interval by an approximate method to complete interval estimation.

本文的主要工作有：(1)解决了Beta分布参数a和b的精确计算以及均值、标准差、偏度、峰度的计算问题；(2)拟合出10余种典型分布的Beta分布的两个参数，并且采用剩余标准差评价该Beta分布的拟合精度；(3)对多种典型的光学与光电测量系统的测量分布进行了Beta分布统示表示；(4)在假设先验分布为均匀分布前提下，得到参数a和b以及均值μ和标准差σ在均方误差损失函数下的贝叶斯点估计理论计算公式；(5)利用直接抽样的Gibbs抽样算法，从后验分布中产生MCMC样本，从样本直接计算均方误差损失函数下的贝叶斯点估计，并使用一种近似方法计算其置信区间，完成区间估计。

It must have value -- that is, it cannot be completely devoid of value to the person receiving it.

报酬必须有价值。即是说，报酬对获酬的人不能是全无价值的。

The focal hepatic lesions can be easily diagnosed and distinguished according to DWI, ADC value and their changing characteristics. So, DWI has an important clinical value in the diagnosis of focal hepatic lesions.

依据磁共振弥散成像的DWI图像、ADC值及其变化规律，能比较准确的判断肝脏局灶性病变的性质，对其的诊断及鉴别诊断有一定价值。

So , it comes to the conclusion that the value of the natural refractive index should be inputted in data processing if possible and a value larger than 2.0 should be believably chosen as the inputted refractive index if the natural refractive index of the measured particles is unknown .

从而得到结论：在测量过程中应尽可能输入与颗粒实际折射率一致的数值；当无法确知颗粒实际折射率时，比较可靠的办法是适当选择一个大于2.0的数值作为输入折射率进行数据处理。

Say so, flexible language can be a value promotion only, is not fall value to become advertisement, not be much a few letters, you do not read those a few letters, see the worthy thing that stationmaster friend writes directly, always be meddlesome benignantly to oneself, useless to oneself, can not look.

所以说，软文只能是把价值提升了，而不是把价值降下来变成广告了，不就是多了几个字母，你不看那几个字母，直接看站长朋友写的有价值的东西，对自己有益总是好事，对自己无用，大可不看。

Some utilitarians, Jeremy Bentham for example, have argued that pleasure and pain are the only things that are of universal intrinsic value; that is, that pleasure and pain are the only things that are valued for themselves, and other things are of value only because they produce pleasure or pain.

对一些功利主义者，例如边沁，认为快乐与痛苦是唯一具有普遍内在价值的；也就是说，快乐和痛苦是对他们自己唯一有价值的东西，其他的东西的价值不过是因为他们生产快乐或痛苦。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。