查询词典 constructive mathematics

Mathematics is not a closed intellectual system, in which everything has already been worked out.

数学不是一个封闭的系统，一切都已经完成。

With the views of the actual situations of industry of province, this article studies the theory of economy transformation on local coal resources, analyzes and compares some successful methods of the transformation in coal industry , And at first by means of the mathematics model, researches the development of economy transformation of Shanxi cities with coal resources and its major measures.

本文结合山西省的实际情况，通过对区域煤炭经济转型的理论研究，分析比较世界煤炭产业转型较为成功地区的一些具体做法，并通过简单的经济数学优化模型，初步探讨出山西煤炭资源型城市经济转型的发展方向和应采取的主要保障措施。

Henot only carried forward his father Huang Zongxi's spirit of real learning but also consciouslyadhered to this principle. His achievement include: presentation of heliocentric theory andother western scientific achievements; records on temperature control in artificial incubation,selectively cultivating new strain of cockscomb end other folk technologies; and studies onastronomy and mathematics and biology, evolution theory in...

认为，黄百家不仅继承发扬其父黄宗羲的唯物的实学精神，而且在具体的学术尤其是科学研究中自觉地贯彻运用这种精神，从而取得较大成就──其中，关于西方科技新成就的介绍，关于我国民间科技新成果（如家禽人工孵化的看胎施温水、鸡冠花新品种培育的人工选择法）的记录，以及关于天文、数学和生物等学科的研究，在我国科技史上都占有重要位置。

Results and conclusion: the mathematics mechanism theory of Nervous system about their basic data and interconnection may be expressed by the neural information encoding formulation: x1=m1a/b and y1=n1c/d、x2=m2b/a and y2=n2d/c The neural information encoding formulation have novenary and undecimal and many other scales. All Periphery Nervous- Cerebral Cortex- Sympathetic Nervous have obvious and invisible encoding data in 2 kinds: yin and yang ,2kinds:ambulatory and static state, 3 grades: Max Med and Min. they all exist in obvious or invisible type. Just like a cogwheel system and there is a inter-meory function among the data.

结果与结论：神经系统基本数据及其相互关系的数学机制可用神经信息编码计算公式：x1=m1a/b与y1=n1c/d、x2= m2b/a与y2=n2d/c表达；神经信息编码计算有9与11等多种进位制；周围神经-大脑皮质-交感神经皆以隐性或显性型式存在阴阳两种静动两类大中小三级编组数据，犹如齿轮系统，数据之间起着互记功能；45对周围神经-54对大脑皮质分区-15对交感神经、脊神经前根与后根神经小束数之比3/5等神经系统基本数据皆是由数学计算机制决定形成。

The theory of homology and cohomology is very important in mathematics.

同调与上同调理论在数学中占有很重要的地位。

Coincidentally, she was with him on the mathematics.

巧合的是，杭州办证与他的数学。

The mathematics models on fluid fields distribution in cold store were established in this paper.

建立了果蔬贮藏冷库内气流场的数学模型，利用计算流体力学软件FLUENT进行了三维稳态数值模拟，比较了库内两种果蔬摆放形式对气流场分布的影响。

With theory of fuzzy mathematics, established the model of vague colligate estimate.

应用模糊数学原理，建立了模糊综合评价模型，并结合国家水质质量标准，通过对108个水样综合评价，划分了研究区水质级别，评价了研究区的地下水污染程度，得出了研究区地下水水质较差和硫酸盐为主要污染物的结论。

From the view of mathematics, it is a NP-hard combinational optimization problem with constraints and it is difficult to find the global optimal solution in theory.

从数学上讲，机组投入问题是一个多约束的NP-hard组合优化问题，很难得到理论上的最优解。

ABSTRACT Computational fluid dynamics is a combinative production of modern hydrodynamics, numerical mathematics and computer science...

计算流体动力学是近代流体力学，数值数学和计算机科学结合的产物，是一门具有强大生命力的边缘科学。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。