pi
英 [paɪ]
美 [paɪ]
n. 圆周率; 希腊字母表的第16个字母
复数:pis
BNC.8364 / COCA.18727
牛津词典
noun
- 圆周率
the symbol π used to show the ratio of the circumference of (= distance around) a circle to its diameter (= distance across), that is about 3.14159 - 希腊字母表的第16个字母
the 16th letter of the Greek alphabet (Π, π)
柯林斯词典
- 圆周率(通常用希腊字母�表示,近似值为3.142)
Piis a number, approximately 3.142, which is equal to the distance round a circle divided by its width. It is usually represented by the Greek letter �.
英英释义
noun
- the 16th letter of the Greek alphabet
- the ratio of the circumference to the diameter of a circle
双语例句
- The model of speed loop control system as well as the integral separating PI controlled algorithm was analyzed in detail.
对控制系统建模和积分分离PI算法进行了详细的分析。 - This is a calculated pi source can be used as the primary portal learning.
这是一个圆周率计算源码,可以作为初级入门学习之用。 - We want to discuss sigma bonds and pi bonds.
我们要讨论sigma键和π键。 - In the process of rotor speed identification, the variable parameters PI mechanism, which has good dynamic and static performance and robustness are used.
在转速辨识过程中,应用了具有较好动态性能和鲁棒性的变参数PI算法。 - In this paper, a novel control strategy of fuzzy-PI control is presented for single-phase SPWM inverter.
为提高永磁同步电动机控制系统的抗扰性能,设计了一种新型的模糊PI控制器。 - Predictive voltage feedback PI controller with feedforward voltage compensator is adopted as the controlled method of the inverter system.
针对在光伏并网系统中采用单纯PI控制的缺点,提出了增加电网电压前馈控制来改善并网电流波形。 - Research of Hybrid Excitation Claw Alternator Control System Based on Fuzzy Self-adaptive PI
基于模糊自适应PI的混合励磁爪极发电机控制系统研究 - Opinions in the literature, Cao Pi and Cao Zhi on the surface seems to be different.
在文学的意见上,曹丕和曹植表面上似乎是不同的。 - PI/ HO33342 double staining could distinguish apoptotic cells as well as normal cells;
PI/HO33342双染可区别凋亡、坏死和正常细胞,且可以见到染色质碎裂; - Fuzzy PI Control Strategies of Networked Control System
网络控制系统的模糊PI控制方法