诗词屋>英语词典>pi翻译和用法

pi

英 [paɪ]

美 [paɪ]

n.  圆周率; 希腊字母表的第16个字母

复数:pis 

计算机

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
      1. 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
            1. the ratio of the circumference to the diameter of a circle

              双语例句

              • An integral item of error was added to the PI regulative law to restrain interference effectively.
                在PI调节律中引入了对误差的积分项以更好地抑制外部扰动;
              • The test results show that it has better performance both in dynamic and steady state than traditional PI control.
                此方法计算量小,实验证明获得了较传统PI控制更好的动静态性能。
              • I advocated pi calculus channels because of their simplicity, which generally translates to performance and maintainability.
                我提倡使用pi演算通道是由于它的简单性,换句话说是由于它的高效性和可维护性。
              • However, PI and square root are a bit more common.
                然而,PI和平方根比较常见。
              • 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。
              • The inner loop adopts PI algorithm and the outer loop adopts a time optimal self-tuning PID algorithm.
                伺服控制器分别采用有源PI校正和时间最小参数自调整PID控制算法。
              • 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。
              • In our self-Oscillation drive system, the stable error of the oscillation amplitude is eliminated by the PI controller.
                在该闭环驱动系统中,通过引入PI控制器消除了振动幅度控制的稳态误差。
              • Application of PI Generalized Predictive Control with Time Stamp to Networked Control Systems
                时戳PI广义预测在网络控制系统中的应用