1.
Gives the number 3.14159..., an approximation of the mathematical constant pi.
给出数学常数π的近似值，即数字3.14159...。
2.
π-subcoalgebra of Hopf π-coalgebra
Hopf π-余代数的π-子余代数
3.
Hopf π-coalgebra and unilateral π-coideal
Hopf π-余代数与单侧π-余理想
4.
Some Results Concerning Odd Perfect Numbers of the Form N = π~α 3~(2β)Q~(2β);
形如N=π~α3~(2β)Q~(2β)的奇完全数
5.
π/4-QPSK Figure Modulate and Demodulation of the Receiver
π/4-QPSK全数字调制解调机
6.
π-quasitriangular group-cograded multiplier Hopf algebras
π-拟三角群余分次乘子Hopf代数(英文)
7.
Formulas truth function degree generated based on Π system
Π系统中公式的真值函数及真度分布
8.
The Implementation of Digital Processing Module in π/4-DQPSK Radio in DSP;
π/4-DQPSK数传电台数字处理模块在DSP中的实现
9.
THE DEDUCTION OF A DECISION WEIGHT π:CONTROVERSIES,QUESTIONS,AND ANSWERS;
预期理论权重函数π的由来、质疑及Tversky的阐释
10.
On the Convergence and Devergence of Progression sum from n=2 to ∞[1-α/(π[n])]~n;
关于级数sum from n=2 to ∞[1-α/(π(n))]~n的敛散性
11.
Study on Quartz Resonator Parameters Detection System Based on π Network
基于π网络石英晶体参数检测系统的研究
12.
Numerical study on the mechanism of torsional flutter for Π-shaped section
Π形板梁分离流扭转颤振机理数值研究
13.
The non-Gaussian form of spatial distribution of source can lead to the decrease of the λ parameters.
π介子源空间分布的非高斯形是导致λ参数减少的一个重要因素。
14.
Improvement of the Experimentation of Measuring Surface Tension Coefficient of Liquid Based on Π Type Tinsel
基于Π型金属丝的液体表面张力系数测量方法改进
15.
Partial Wave Analysis of J/ψ→γπ～+π～-π～+π～-;
J/ψ→γπ～+π～-π～+π～-的分波振幅分析
16.
The exploratory experiment teaching about calculation of π based on the elementary geometry method is researched.
探讨了基于初等几何方法的圆周率π的数值计算的探索数学实验教学。
17.
Synthesis and Properties of D-π-A-π-D and D-π-A-π-A Photoelectrical Materials Based on Stilbene Derivatives;
D-π-A-π-D和D-π-A-π-A均二苯乙烯类有机光电材料的合成及性能研究
18.
Theπ- calculus is a kind of mobile process algebra which can be used to model concurrent and dynamic systems.
π算是一种移动进程代数,可用于对并发和动态变化的系统进行建模。