approximate formula

An approximate formula for crack tip opening angle a_T is derived and the regularity of a_T varying with the growth of crack is found.

导出了裂尖张开角αT的近似计算公式，并测得裂纹扩展时αT的变化规律；

The Error Analyzing and Comparing between Theoretical and Approximate Simulated Formula in Measuring The Temperature of Cold Atoms with Short-distance Time-of-flight Method

测量冷原子温度的理论与近似拟合公式的误差分析

According to the fatigue environment in the ice zone and the ice-force spectrum function, this paper establishes the approximate explicit formula of nodes stress with respect to the ice velocity and thickness.

本文结合现有的冰疲劳环境荷载及冰力谱函数，提出了相对于冰速、冰厚随机冰载的管节点应力幅显式近似计算公式；

This peper introduces the theory and the approximate calculating formula for medium charge ratio in grinder.

本文导出了测算磨机介质充填率的理论及近似计算公式.

Experimental results obtained in water fairly agree with the approximate formula.

在水中获得的实验结果与近似公式相符合.

It also provides a coefficient to revise the approximate formula proposed by CCITT Directives ( 1963 ) .

文中对该委员会 1963年 导则中给出的近似计算公式给出了修正系数.

On the basis of the weighted average flow velocity, approximate formula for calculation of fluid resistance ratio in eccentric and non-eccentric sprial channels was deduced.

依据此流速推导了偏心与未偏心螺旋通道中流体阻力之比的近似公式。

It also introduces the basic theory on measuring the temperature of cold atoms with short-distance time-of-flight method, and analyzes the error between theoretical and approximate formula.

还详细介绍了通过冷原子短程飞行吸收光谱信号推测冷原子温度的基本原理，并且对用于冷原子温度测量的理论公式与近似公式进行了误差分析与比较。

The article analyzes all factors concerning switching time of bi-directional multiplex section protection ring on 2-fiber, gives the approximate engineering calculation formula and basis.

本文对影响SDH二纤双向复用段保护环的倒换时间的各种因素进行了分析，给出了工程设计中的近似计算公式与依据。

Exact calculating formula of area moment of inertia of H-section steel beam is instead of its approximate calculating formula, So transfer matrix method of tapered H-section steel beam about its internal force analysis is established.

用H型钢梁截面惯性矩较精确的近似计算公式来代替其精确计算公式，从而建立了楔形H型钢梁内力分析的传递矩阵法。