number system

Based on a brief review on developments of number system,a new developed pattern is proposed.

在数系发展的基础上,提出了一种新的发展模式:四元数推广为矩阵形式aI+bA+cB+dC,其中单位矩阵I和3个特殊矩阵A,B,C分别相应于数1和虚数单位i,j,k。

A New Correlation Equation for Determining High-Velocity Turbulence Coefficient of Gas Wells;

确定气井高速湍流系数的新相关经验公式

A Method of Determining High-velocity Coefficient β and Its Correlation;

确定高速速度系数β的方法及其相关经验公式

How to Select the Welding Seam Coefficient of ASME Specified Products;

如何确定ASME规范产品的焊缝系数

The Calculation of C-G Coefficients for Crystal Space Group D_(6h)￣(1) (P6/mmm);

晶体空间群D_（6h）~（1）（P6／mmm）的C—G系数计算

Rules for rounding interval and significance figure of regression coefficients;

修约间隔规则与回归系数的有效位数

The dynamic coefficients of concentric rotor in infinite length large gap annular flow, based on the turbulent bulk flow theory and Moody wall friction coefficient equation, is solved by perturbation theory and numerical method.

基于紊流整体流动理论和 Moody表面摩擦系数方程 ,采用摄动理论和数值方法求解无限长大间隙环流中同心涡动转子的动特性系数 ,研究了系统参数对无限长大间隙环流中同心涡动转子动特性系数的影响。

The article mainly talks about the problems that we must think about the directing stability of hanging machine combination,the directing stable modulus X and the relationship between the directing stable modulus and critical slope;the checking about the loading of the tyre and locating the total weight of agriculture machine implements and the general uses of hanging construction.

本文主要论述了设计悬挂式农机具时必须考虑悬挂机组的纵向稳定性,机组的纵向稳定系数X和临界坡度与纵向稳定系数的关系;轮胎载荷的校核,合理确定农机具的总重量;悬挂机构的通用性等问题。

series and tail series

整数系列与零头系列

cupping(ductility) value

压延系数，引伸系数，拉伸系数，深拉系数

auxiliary value

修正系数，校正系数

acoustical transmission coefficient

声透射系数，透声系数

mass transfer coefficient

质量传递系数，传质系数

power coefficient

功率系数，动力系数

damping coefficient

减幅系数，阻尼系数

drag coefficient

牵引系数，阻力系数

assurance coefficient [ factor ]

安全系数, 保险系数

automatic data digitiing system

自动数据数字化系统

oceanographic digital data system

海洋学数字数据系统

reciprocal formation volume factor

地层体积系数的倒数

generating function of binomial coefficients

二项式系数的生成函数

ADDAS (Airborne Digital Data Acqusition System)

机载数字数据采集系统

diffusion coefficient for neutron number density

中子数密度扩散系数

Relational Databases versus Digital Soup

关系数据库与数字汤

longitudinal coefficient

船体)棱形系数船体棱)棱形系数圆柱形系数

concentration coefficient of sedimentatio

沉积[的]浓度系数