1) MF in natural world
自然界物流
2) natural convection boundary layer
自然对流边界层
1.
The instability and transition process of the natural convection boundary layer around a vertical heated isothermal flat plate was investigated experimentally.
对恒壁温竖直加热平板的自然对流边界层的流动稳定性与转捩过程进行了试验研究，研究结果表明在外层速度剖面拐点处测得的线性不稳定波的特性与Ｂｒｅｗｓｔｅｒ和Ｇｅｂｈａｒｔ的计算基本一致。
3) nature
[英]['neɪtʃə(r)] [美]['netʃɚ]
自然界
1.
Irretaliatory Nature"Is Possible or Impossible;
“无报复自然界”:可能抑或不可能
2.
On the dialectical relation of human and nature;
论人与自然界的辩证关系
3.
On the intervention of humankind in nature and its consequence;
试析人类对自然界的干预及后果
4) natural world
自然界
1.
Anyway the development of natural world,human society and man himself are closely related to the scientific and technological innovation activities.
当今时代,无论是自然界、人类社会还是人自身的发展都与科技创新活动休戚相关。
5) natural boundary
自然边界
1.
in this paper we have proved that certain random Taylor series almost surelyconverges with its convergence circle as the natural boundary, that is, this series cannot beanalytically extended out of its convergence circle.
证明了一类随机Ｔａｙｌｏｒ级数，几乎必然以收敛圆周为自然边界，即不能解析开拓到收敛圆外。
6) the nature
自然界
1.
To understand scientifically the essential features of the nature s stratiform structure and circulation movement forms an important prerequisite to understanding correctly the nature, either for a part or as a whole.
科学地把握自然界的层次结构与循环运动的本质特征是人们正确地认识自然界整体或自然界部分的重要前提。
2.
The ecological ethics holds that human beings is not the center of the world s existence,but the center of all human activities and thoughts as well as the relation between human beings and the nature.
生态伦理学认为,人不是世界存在的中心,而是人类全部活动和思考的中心,它是人对其与自然界关系及其现实的人类实践活动的一种价值定位。
3.
Sustainable development is a theory of coordinated development between human being and the nature, and a new development concept deduced from concluding the successes and failures at the end of the 20th century.
可持续发展理论 ,是人类与自然界和谐发展的理论 ,是人类于 2 0世纪末在总结成功的实践和失败的教训的基础上形成的一个崭新的发展观念。
补充资料：蓟县中上元古界国家级自然保护区
蓟县中上元古界国家级自然保护区
位于天津市蓟县境内，面积900公顷，1984年经国务院批准建立，主要保护对象为中上元古界标准剖面，是我国第一个国家级地质剖面自然保护区。
中上元古界剖面展布在山峦重叠的燕山南脉，以岩层齐全、出露连续、保存完好、质地清楚、构造简单、变质极浅和古生物化石丰富闻名于世，并被确定为中国中上元古界的标准剖面。剖面地层总厚度达9197米，记载着距今18.5亿年至8亿年间的地质演化史，在岩层中，有生命早期阶段的宏观藻类植物，并在距今14 – 12亿年的岩层中，发现了世界罕见的微生物群，大大提前了此种微生物的出现年代，具有重要的科学价值。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条