基本常数

你还可以做类似的基本常数推算。

You can do this kind of mental exercise with all the fundamental constants .

真空中光的速率是自然界的基本常数之一。

The speed of light in free space is one of the fundamental constants of nature .

心肌显像剂~（68）Ga（BAT－TECH）的一些基本常数测定

Measurements of some basic constants of ￣( 68 ) ga ( kat-tech ) as an imaging agent

VB值是乳化剂的亲水基与亲油基体积比。VB值来源于原子结构的基本常数-鲍林半径，并且可用公式表达、定性分析及定量计算。

VB is the volume ratio of the hydrophilic group to the lipophilic group in the emulsifier molecule , it can be calculated from the constants of elementary atomic sturcture and can be expressed in formula or comes from qualitative and quantitative analysis .

原子核的基本常数及模型参数库

Library of Nuclear Characteristic Constants and Parameters for Nuclear Model

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

Permanent Tides and Geodetic Fundamental Constants

物质世界的基本常数

Basic constant of matter world

因此，孔隙度是油田勘探与开发必须掌握的基本常数。

Therefore , the porosity is the fundamental constants to be mastered for exploration and development of oil field .

事实上，这个轨道是27的平方根，与一些基本常数相乘。

It turns out , that orbit is the square root of 27 times just a handful of fundamental constants .

这当然是真的，如果自然基本常数改变了，我们将不复存在。

Well , it 's certainly true that if the fundamental constants of nature were somehow changed , we wouldn 't be here .

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。

The angle-change constants are the fundamental constants of a nonuniform beam , and only the coefficients of the angle-change constants need be computed .

同时，对元素原子量标定，乃至阿伏伽德罗常数等基本常数的标定也起了重要作用。

In the meanwhile , re-determination has been made on " Avogadro constant " as well as on atomic weights of a number of elements .

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。

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 .

在分析响应波形与仪器参数、基本常数变化之间的关系时，引进了响应波形特征参数的概念。

The concept of characteristic parameters of response waveform is introduced for analyzing the relation between response waveform with instrument parameters and the interrelations between variations of elementary constants .

给出了从地震图上能够识别的特征参数的最小变化范围，从而在仪器基本常数变化与响应波形特征参数变化之间建立了定量关系。

The minimum variation range of characteristic parameters that can be identified on seismograms is given . Thus quantitative relations between elementary constant variations and the characteristic parameter variations of response waveform are established .

我们所知道的科学定律包含许多基本常数，就如电子的电荷大小，质子与电子的质量比值，等等。

The laws of science , as we know them at present , contain many fundamental numbers , like the size of the electric charge of the electron and ratio of the masses of the proton and the electron .

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。

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 .

电子电荷量e是一个重要基本物理常数，其经典测量技术&密立根油滴实验是大学物理实验教学的重要项目之一。

The electric charge of a single electron is a very important physics constant , and its original measurement method , Millikan 's oil-drop experiment , is also the key teaching experiment in university .

万有引力常数G是一个与理论物理、地球物理和天体物理密切相关的基本物理常数，但G值的高精度绝对测量面临着种种困难。

The gravitational constant G is an important fundamental physics constant closely related to theoretical physics , astrophysics and geophysics , the precise measurement of G is faced with various kinds of difficulties and challenges , however .

基本物理常数研究的新进展和光梳技术

New Development of Fundamental Physical Constants and Optical Comb Technology

基本物理常数的潜科学特征

Properties of Potential Science of the Basic Constants in Physics

基本物理常数最新推荐值评述

On the latest recommended values of the fundamental physical constants

电学基准和基本物理常数测量的新动态

The Recent Developments of the Electrical Standards and Determination of the Fundamental Constant

这与全球尺度水汽相对湿度基本保持常数的结果不同。

This is different with results on global scale that relative humidity is conservative .

基本物理常数与计量基本单位

Fundamental Physical Constants and Basic Measure Unit

基本物理常数教学潜科学分析探索

The Exploration of the Potential Science Analyses of the Teaching of the Basic Constants in Physics

最后，揭示对基本物理常数教学进行潜科学分析的重要作用，并把所建立的基本物理常数潜科学分析的分析理念和教学模式进行推广。

Finally , the important functions of the teaching mode of the potential science of the basic constants in physics are discussed in this paper .

物理学中基本物理常数的确立及精密测定与物理学的发展起着相互促进的作用，准确测量基本物理常数尤为重要。

The establishment of the basic physics constant and precise measurement play a mutual promoting role in the development of physics , especially the precision of measuring .

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。

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 .

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 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 .