系统学

Combining the homogeneous matrix transformation theory of space mechanism and computer graphics, we raise the general principle and motion simulation's method of complicated mechanism, which is represented by spacial multipole structure of open chain.

通过将空间机构学齐次矩阵变换原理和计算机图形学原理相结合，提出了以空间多杆开式链机构为代表的复杂机械系统运动三维图形仿真的一般原理和方法。

Paleontology, evolutionary developmental biology, comparative genomics and genomic phylostratigraphy contribute most of the evidence for the patterns and processes that can be classified as macroevolution.

古生物学、进化发育生物学、比较基因组学和基因组系统发育地层学为宏进化的模式和过程提供了大部分的证据。

Medical Informatics is a rising field of research with Medical Information System as one of its important branches.

医学信息学是一个新兴的领域，医疗信息系统是医学信息学的一个重要分支。

This system, called MetaBasis, aims to provide the bioinformatics community, and especially newcomers to the field, with easy access to reliable bioinformatics databases and tools.

这个叫做MetaBasis的系统的目的是为生物信息学社区，特别是这个领域的新手，提供对可靠的生物信息学数据库和工具的轻松访问。

Marine Micropaleontology is an international journal publishing results of research in all fields of marine micropaleontology of the ocean basins and continents, including paleoceanography, evolution, ecology and paleoecology, biology and paleobiology, biochronology, paleoclimatology, taphonomy, and the systematic relationships of higher taxa.

这是《海洋微体古生物学》国际性期刊的网站，该期刊内容是有关海洋盆地和大陆的微体古生物学研究成果。包括古海洋地理，进化，生态，微体古生物学，海洋古生物学，生物学，古生物学，生物年代学，古气候学，生物埋葬学，系统发生关系。

William Muirhead's Universal Geography was published by London Missionary Society Mission Press in 1853 - 1854. As a first Western geographical encyclopaedia of Chinese edition, it systematically introduced geology, physical and human geography, regional geography, and also provided some basic knowledge of climatology, hydrology and ethnology to the Chinese.

作为第一部中文版的西方地理学百科全书，该书较为系统地向中国人介绍地质、自然地理、人文地理、区域地理的知识，也介绍了气候学、水文学和人种学的一些基本知识，其中"地史论"较早详细地介绍了荷马、希罗多德、马可·波罗、洪堡等一些西方著名的地理学家。

The coring was successfully operated on the winter ice-cover of the lake in 2000 and the pioneer practice of the ""off-the-ice"" coring proves to be very useful and economic for taking quality cores from lakes in northern China.A multidisciplinary investigation has been carried out on core HQH4, one of the three 11-m-long cores. Results from previous investigation include lithostratigraphy, radiocarbon dating, paleoecology of Ostracoda, stable isotopic record of ostracod shells, total nitrogen and organic carbon, C/N ratio, 81 C of organic matter etc.

在对深度为11米的HQH4岩芯开展了~(14)C年代学、岩性地层学、介形类古生态及介壳稳定同位素、有机碳和总氮及C/N比值、有机碳同位素等多学科综合分析测试和研究工作的基础上，本硕士学位论文研究侧重开展了：1HQH4岩芯烧失量(Loss-on-ignition)的系统分析测定及该地层学变量的古湖泊和环境变化意义的研究；2沉水植物川蔓藻化石种子生态学特征及其在黄旗海湖泊水位重建和气候变化研究方面的重要意义的研究。

Based on the algorithm principle of curve,taking the Bezier curve for example,in the condition of VC++ 6.0,through creating the virtual grid and simulating the computer's pels points,with the alternant control technology and the visualization technology,a brand-new visualization teaching demonstration system of computer graphics is developed.

以开发具有更加良好认知意义的教学软件为目标，摒弃了计算机图形学传统的教学方式，从曲线的算法原理出发，以Bezier曲线为例，在VC++6.0的开发环境中，通过建立虚拟栅格和模拟计算机的"像素点"，运用了交互控制技术，动态演示的可视化技术，开发出了一套全新的计算机图形学可视化教学演示系统。

For the first time in the UK, a multidisciplinary group of experts in the fields of cardiology, endocrinology and periodontology reviewed the latest clinical evidence to examine the emerging evidence for an association between periodontitis and systemic conditions.

在英国，一个多学科（心脏病学，内分泌学以及牙周病学等）专家组首次坐在一起，共同对最新的临床进展进行研究，以期确定牙周炎和系统状况之间是否存在着联系。

On the basis of the retrospective exploring of the formation and development of modern petrology,this paper discusses some dialectical problem s on the study of modern petrology systematically,the contents include scientific methodology and epistemology.

本文在回顾现代岩石学形成与发展的基础上，系统地探讨了现代岩石学研究中的若干辩证问题，内容涉及科学认识论和方法论两大主题。

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％。