系统学

Then,the mechanisms of PAHs accumulation,transfer and biodegradation and its effecting factors were elucidated combining field survey and laboratory simulation methods and environmental geochemistry,agrology and biology subjects.

本研究选择典型土壤/沉积物—生物系统，通过实地资料收集与室内分析与模拟相结合的方法，联合环境地球化学、土壤学、与生物学等学科，研究了典型土壤/沉积物—生物系统中PAHs的累积、迁移与降解机制与影响因素。

In order to study the polygenesis of AFP and the relationship between individual development and system development, the evolution of the albuminoid gene family was analyzed by analyzing the proteins of the gene family from different species by bioinformatics approaches, and drew a phylogenetic tree of different albumin domains from different proteins.

为了研究AFP的系统发生，并以此探讨系统发育与个体发育的关系，运用生物信息学手段，分析了不同物种中类白蛋白家族成员的进化关系，并对各分子的白蛋白结构域进行了进化归类。

Based on these theories, it develops a GIS map projection software using Visual C++ as a platform. The software consists of two parts: analytical ordinal transformation and analytical athwart transformation. Analytical athwart transformation implements map projective transformation with coefficients obtained through numerical method, which is also the main idea of this paper. Map projective transformation process is illustrated with the examples of Mercator projection and conic projection.

地图投影建立了平面上的点(用平面直角坐标或者极坐标表示)和地球表面上的点之间的函数关系，而地理信息系统以平面直角坐标形式通过计算机图形学的方法表示2维或3维地理空间信息，因此，地图投影起到了地球空间与地理信息系统之间的坐标转换的桥梁作用[1]。

In this paper, theories and technologies of computer graphics are researched based on development of an anti-aircraft Missile and Mirror System.

本文以一种防空导弹飞行动态仿真系统为研究背景，对图形仿真系统的实现，以及计算机图形学的基本理论和应用技术进行了研究。

The thesis in this paper lies to discuss how to apply bisection technique to complexity science and high efficient algorithm design, for this motivation, three important complex systems are discussed, which are Walsh function system, fractal geometry and bioinformatics.

本论文目的在于探讨二分技术在探索复杂性科学及高效算法设计中的应用，考察了计算科学领域三类重要的复杂系统：Walsh函数系统，分形几何以及生物信息学。

Other semirings arise naturally in such diverse areas of mathematics as combinatorics, functional analysis, topology, graph theory, Euclidean geometry, probability theory, commutative and noncommutative ring theory, optimization theory, discrete event dynamical systems, automata theory, formal language theory and the mathematical modeling of quantum physics and parallel computation systems.

在许多不同的数学领域存在着其它形式的半环，比如组合学，泛函分析，拓扑学，图论，欧式几何，概率论，交换和非交换环，优化论，离散动力系统，自动化理论，形式语言理论，量子物理的数据模型和并行计算系统。

As an important research area of education technology, the performance technology and the electronic performance support system have obtain the success in the enterprise training, we believed the electronic performance support system that was used in education also can provide the conformability resources for the student work and study, help the promotion of study performance.

绩效技术和电子绩效支持系统作为教育技术学的一个重要研究领域，在企业培训领域取得了成功，我们相信用于教育领域的电子绩效支持系统也可以为学生提供整合性资源的工作辅助与学习支持，帮助提升学习绩效。

Development and application of software and hardware of open type cast iron thermal analysis of cast iron melt inspection have been reported with explanation of each module function of analysing and calculating chemical composition,as-cast mechanical properties and structural characteristics,solidification phase transformation heat,some thermal phisical parameters based on solidifying and cooling curve of samples.

报告了用于检测铁液熔炼质量状况的开放式铸铁热分析软、硬件系统的研制与应用情况，并系统地阐述了根据热分析试样的凝固冷却曲线实现对铁液化学成分、铸态下的力学性能和组织特征以及对凝固相变热和某些热物理量进行分析和计算的各子模块功能。

The scientists' first goal is to improve the CrystalVision system to enable automated, accurate and fast crystallography image classification.

科学家的首个目标是把CrystalVision系统改进成自动化的、准确的、快速的结晶学图像分级系统。

Some U.C. campuses do not accept any transfers who may have completed more than 120 quarter units.

有些加利福尼亚大学系统的院校不接受已经完成120个学季分值的学生。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。