fundamental constants
英 [ˌfʌndəˈmentl ˈkɒnstənts]
美 [ˌfʌndəˈmentl ˈkɑnstənts]
网络 基本常数
双语例句
- Well, it's certainly true that if the fundamental constants of nature were somehow changed, we wouldn't be here.
这当然是真的，如果自然基本常数改变了，我们将不复存在。 - Extended features include a list of23 fundamental constants, illustration of the activity series of metals, metric system prefixes and a historical summary of superconducting materials.
扩展功能包括了23基本常数，对金属系列活动，公制前缀和超导材料的历史概况说明清单。 - The speed of light in free space is one of the fundamental constants of nature.
真空中光的速率是自然界的基本常数之一。 - This paper discusses how to scientifically employ a geocentric 3D coordinate system in China and analyzes three main scientific problems involved in this regards, i.e. the definition of the system, the geodetic fundamental constants and tidal correction.
摘要讨论了我国科学地采用地心三维大地坐标系，主要涉及到的该坐标系的定义、采用的大地测量基本常数以及与此有关的潮汐改正等三个问题。 - The speed of light in vacuum is usually considered as one of the fundamental constants.
基于量子力学可以获得速度的测不准关系，这样光速作为速度也将是测不准的。 - Application status of the fundamental physical constants in textbooks of college physics
基本物理常量推荐值在大学物理教材中的应用现状 - Fundamental physical constants By the US National Institute of Standards and Technology.
物理基础常数，由美国国家标准和技术会提供。 - You can do this kind of mental exercise with all the fundamental constants.
你还可以做类似的基本常数推算。 - The value of quantum electrical primary standards only depends on fundamental physical constants and is independent of other factors, such as time, place, material and ambient conditions, therefore, quantum electrical primary standards can be improved further and play an important role in next century.
量子电基准的量值只取决于基本物理常数，与时间、地点、材料、环境条件等因素无关，因此量子电基准可进一步得到提高并在二十一世纪中发挥重要作用。 - Precise comparisons of optical resonance frequencies of atomic hydrogen and other atoms with the microwave frequency of a cesium atomic clock are establishing sensitive limits for possible slow variations of fundamental constants.
通过用铯原子钟的微波频率对氢原子和其他原子的光学共振频率的精密比较，将确定基本物理常数可能的缓慢变化的灵敏度极限。 - Permanent Tides and Geodetic Fundamental Constants
大地测量基本常数&对永久性潮汐与大地测量基准一文的一个注记 - The angle-change constants are the fundamental constants of a nonuniform beam, and only the coefficients of the angle-change constants need be computed.
角变常数为变梁的基本常数，而所须计算者只是各项角变常数的系数φ，简称为角变系数。 - On the latest recommended values of the fundamental physical constants
基本物理常数最新推荐值评述 - Fundamental Physical Constants and Basic Measure Unit
基本物理常数与计量基本单位 - Based on the fundamental piezoelectric Christoffel's equation, we derived the expression of the elastic constants for piezoelectric crystal with trigonal symmetry point group 3 m.
本文从基本的压电Christoffel方程出发导出三角晶系3m点群压电晶体弹性常数的表示式。 - A brief review is presented of three fundamental physical quantities derived by Max Planck in 1912, referred to have as the Planck mass, Planck length and Planck time which had been arranged in the tables of 1986 and 1998 fundamental physical constants.
简要介绍了普朗克于1912年提出的三个基本物理量：普朗克质量、普朗克长度和普朗克时间.它们已被列入1986和1998年基本物理常数表。 - At the same time, the practice shows that the accuracy of fundamental SI units could be improved further by redefinition of some fundamental physical constants.
同时，实践证明，用固定若干基本物理常数的数值来重新定义基本单位，可以进一步提高基本单位的准确性。 - New Development of Fundamental Physical Constants and Optical Comb Technology
基本物理常数研究的新进展和光梳技术 - The discovery and measurment of fundamental physical constants play an important role not only in the development of physics, but also in the development of metrologics.
基本物理常数的发现和测量，不仅在物理学的发展中起到了很大的作用，而且在计量学的发展上也起到了重要的作用。 - The authors have discussed the fundamental process of surface CASING modification. The authors have also solved the Clark equation and gotten surface process rate constants, bulk process rate constants and surface activation depth.
解Clark方程得出表面过程速率常数、体相过程速率常数以及CASING表面反应深度。 - They can not only be used for testing of fundamental physical constants but also essential technologies for Global Positioning System ( GPS) and high-speed communication networks.
光钟不仅可以用来测量基本物理常数的变化，也是全球定位系统和高速通信网络中的重要技术。 - Therefore, the porosity is the fundamental constants to be mastered for exploration and development of oil field.
因此，孔隙度是油田勘探与开发必须掌握的基本常数。 - Not only it can be used to improve the precise measurement of fundamental physical constants, but also it can give technical support for navigation related to global positioning system.
它不但可以推进基础物理研究和基本物理常数的精密测量，而且也为与全球定位系统相关的导航定位提供了技术支持。