查询词典 derive...from

You can derive a great deal of satisfaction from discharging your responsibilities.

你会觉得非常满意对于你的责任。

However,such issues as how to derive negative information from disjunctive database or logic program,satisfactory settlement remains to be found.

首先，给出一种关于否定信息推理规则的评价准则，并用该准则分析比较已有的若干相关规则。然后，再给出一种不同的推理规则，并证明它的一些重要性质。

We derive the ellipticity and position angle of Abell 2199, and our result coincides remarkably with those in previous studies which are based on the data from a very small core region (～30) to a very large area (～5.5°).

将我们的结果与Rines等人研究的Abell 2199的引力内流区域X-ray群的空间分布椭率和方位角进行对比，发现这些星系团基本在同一条直线上，且空间分布方位角基本相同。

Because programs in haskell are pure functions, simple equational reasoning can be used to execute programs, to transform programs, to prove properties of programs, and even to derive programs directly from specifications of their behavior.

因为Haskell程序是纯函数，简单的等式证明能用于执行程序，转换程序，说明程序的属性，甚至直接从程序行为的规格说明中得到程序。

It has the advantage over single image in typhoon prediction. In the thesis, existing cloud motion wind algorithm is improved and a Cloud motion Wind Inferring System has been developed to derive wind fields from 2 or 3 infrared window images of FY-2C which are temporally continuous and projected by equidistance.

台风是严重影响人类生产生活的灾害性天气之一，对台风云系进行分析识别具有极其重要的现实意义，由于台风形态及结构的复杂性，单幅云图无法直观的分析其风场结构、移动趋势，通过云迹风分析，也可很好解决这样的问题。

In this thesis, starting from fundamental principle of the Weyl correspondence, we derive explicit form of the Wigner function in noncommunicative phase space.

我们在本文中从Weyl对应的基本原理出发，引入空间的非对易性，得到了不同于以往的形式。

Attempts to shore up the value of a derivative without shoring up the value of the assets from which they ultimately derive their value are likely to be in vain however cleverly we may try to finagle.

无论我们怎样巧妙地瞒山过海，那种只注重衍生物的价值而忽略最终让我们获利的资产的价值的尝试大都是徒劳无益的。

For a high laser intensity and small spot size, an electron may escape from the laser and can retain energy gain.We obtain analytical expresses of electron instantaneous momentum. Taking the plane wave of Gaussian laser for an example, we derive electron distribution function over instantaneous values of electron momentum and energy.

本文考虑电子初始温度不高(约100eV)以及脉冲长度很短(约4-6个激光波长)时，也能得到两群高能电子群；在脉冲长度极短(仅有2-3个激光波长)和电子初始温度不太高的情况下，就有明显的三群高能电子群出现，且如果激光功率密度大于5×10~(18)wcm~(-2)时，高能电子的温度也达到MeV。

From the point of view of geobotany, with the method of correlative factors of growth of plants, a countrywide theoretic ecological division was done for the introduction of Camptotheca acuminata and three kinds of areas of ecological preferent zone, ecological adaptive zone and ecological unadaptable zone were divided. With the theory of synecology, the characteristic on environment, constitution, life form spectrum, diversity, similarity of plots of communities were researched. Applying the method of species association, discrete distribution, indensity index, fractal geometry, etc. to research relations between the species of the communities, space distribution of Camptotheca acuminata, structure of age of Camptotheca acuminata, in different communities. Using the theories of autoecology, distibutons of seeds on land and growth of seedlings in vertical and horizontal directions, biomass of organ of Camptotheca acuminata were analyzed. On the opinions of conservation biology, the external and internal factors impressing Camptotheca acuminata were analyzed to research the mechanism of the endangered species, and with using of CTM Model, the future development direction of Camptotheca acuminata in different communities were forecasted, and. Standing on the position of resources ecology, discussing the regularity of camptothein in Camptotheca acuminata of different sites and seeding of different resources, also the the derive technics of camptothecin.

本文从地植物学的角度，运用植物生长相关因子法，对我国喜树资源的生态适宜区进行了划分，理论上确定了我国的喜树的引种栽培的最适生活区域、生态适宜区域和不适宜生活区域；从群落生态学的角度，对野生喜树所在的典型群落的群落环境、群落组成、群落生活型谱、群落的物种多样性特点、群落样地间相似性进行了研究；从种群生态学的角度，运用种间联结性、离散分布模型、聚集强度指数、分析几何等分析手段，对野生喜树所在典型群落间的种间关系、喜树的空间分布格局、年龄结构等进行了分析；从个体生态学的角度，对不同年龄组的喜树的种子的散落的垂直分布、水平分布、时间分布及种子发芽率和千里重等特点、不同种源的人工喜树苗期特点、喜树的高生长和茎生长特点、喜树的器官生物量特点进行了研究；从保护生物学的角度，对野生喜树的濒危的内部因素和外部因素进行了探讨，并运用CTM模型对不同群落中野生喜树的种群趋势进行了预测；从资源生态学的角度，对我国地理环境下喜树中喜树碱含量的地理分布规律、不同种源的喜树幼苗中喜树碱含量变化规律进行了研究，并对喜树碱的提取工艺进行了探讨。

"From his studies in the late 19th century, Gregor Mendel derive d certain basic concepts of heredity, which eventually became the foundation for the modern science of genetics."

孟德尔从他在19世纪晚期的研究中，得到一些基本遗传法则，最后成为现代遗传学的基础。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。