pi
美式发音: [paɪ] 英式发音: [paɪ] 过去分词：pied 现在分词：piing 第三人称单数：pies 复数：pis pin.1.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 3.14159…
2.希腊字母表的第 16 个字母the 16th letter of the Greek alphabet (Π, π)
n.1.〈英〉同“pie”2.【数】圆周率3.希腊字母表的第十六字母
n.1.<BrE>Same as pie2.in mathematics, a number written as the symbol π that is used to show the relationship between the distance around a circle and the distance across it
1.聚酰亚胺(polyimide) permute 广义转置 pi （预定义变量）圆周率 pie 二维饼图 ...
3.皮 Peng[ 彭、蓬] Pi[ 皮] Ping[ 平] ...
4.等电点等电点：氨基酸所带正电荷数与负电荷数相等时（净电荷为零时）的溶液pH值，称为等电点（pI）。公式推导：pI＝1/2 （pK1’…
5.碘化丙啶(Propidium Iodide)碘化丙啶(PI)是一种核酸染料，它不能透过完整的细胞膜，但在凋亡中晚期的细胞和死细胞，PI能够透过细胞膜而将细胞核染红 …
6.搏动指数(pulsatility index)搏动指数（PI）为1.12±0.17，阻力指数（RI）为 0.66±0.07 妊娠30周以后,当脐动脉的SV/DV>3.0,PI>1.7,RI>0.7时多发生胎儿 …
造句带翻译释义:,圆周率,希腊字母表的第 16 个字母,有道德的,皮,等电点1.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。
2.It's dangerous to leave P. I. and risk getting busted by the guards, but they both know that Michael has no choice.缺勤PI是很危险的，有可能会被警卫抓住，但是他们都知道Michael没得选择。
3.How much is one over two times the square root of pi?圆周率的平方根的二分之一是多少？
4.Seattle PI confirmed with Microsoft that it has been used internally and is likely to be made public soon.西雅图信息邮报确认了微软正在内部使用该服务而且貌似很快就会向公众开放。
5.He soon received promotion, for his superiors [sju: 'pi ri ] realized that he was a man of considerable ability.本句汉语意思是：不久，他就得到了提升，因为他的上司们认为他的能力相当强。
6.Of all the wonders of ancient Egypt, Ramesses the Great's capital- the city of Pi-Ramesse, was one of the most spectacular.在古埃及所有奇观中，拉姆西斯大帝的首都派拉姆西城是其中最为壮观的一个。
7.When the speed servo system has a large torque reference, the output of its PI controller is often saturated.当速度伺服系统的转矩参考值很大，转矩PI调节器的输出就容易饱和。
8.Cao Cao was not just a statesman and general; he was a man of cultured tastes too, as were his two sons Cao Pi and Cao Zhi.此外，曹操还很重视文化，他多才多艺，他的两个儿子曹丕、曹植也都是有名的文学家。
9.CRI method has been used to deduce the fuzzy control rules and it was combined with PI control by the harmony gene.我们采用CRI方法推导出模糊控制规则，再利用软件开关将模糊控制与PI控制结合起来。
10.LIFE of PI All of life is an act of letting go, but what hurts the most is not taking a moment to say goodbye.人生也许就是不断的放下，然而令人痛心的是，我都没有好好地与他们道别。