2) 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
3) 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。
4) 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。
5) 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。
6) natural crisis
自然临界
补充资料:视界
黑洞的边界,或称单向膜。对于经典黑洞而言,黑洞外的物质和辐射可以通过视界进入黑洞内部,而黑洞内的任何物质和辐射却不能穿出视界。球状黑洞(史瓦西黑洞)的视界是以引力半径rg为径向坐标值的球面:,式中M为黑洞的质量,G为万有引力常数,c为光速。视界的表面积 A是一个重要的量,对于球状黑洞A=4πr娷=16πG2M2/c4。由于视界具有单向膜性质,黑洞的质量M及其表面积A,是只增不减的。如果两个黑洞发生碰撞而合并成为一个黑洞,那么,合并后的黑洞的表面积将大于原来两个黑洞的表面积之和。因此,黑洞视界的表面积与热力学的熵的概念相近。通常就把黑洞的熵定义为黑洞视界表面积与一常数的乘积。对于有旋转运动的黑洞(克尔黑洞),视界的径向坐标为:
,式中J是角动量。在G=c=1的系统中,
,式中α=J/M。当α=0时,r=rg,克尔黑洞就退化为史瓦西黑洞。
,式中J是角动量。在G=c=1的系统中,
,式中α=J/M。当α=0时,r=rg,克尔黑洞就退化为史瓦西黑洞。
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