The average inductance current can be calculated by input voltage and output voltage to use in PI regulator.

通过采样输入输出电压以获取电感的平均电流，从而代替了实际的采样电流，以进行PI调节。

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Conclusion: The lower CaM activity is an important pathological expression in Pi deficiency rats, and Huangqi injection can significantly regulate this pathological change.

结论：脾虚大鼠壁细胞钙调素活性明显下降，黄芪注射液对壁细胞内钙调素活性这一病理变化有明显调整作用。

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The supervisory information system(SIS) and its database platform PI(plant information)real-time database, data flow and point building technology in PI database are introduced.

介绍了厂级监控信息系统（SIS）及其数据库平台PI实时数据库、PI数据库中的数据流程以及PI数据库的建点技术。

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So let's have a clicker question here on how many total pi bonds do you expect to see in benzene?

让我们来做个课堂习题,你们觉得苯环里有一共多少个π键？

麻省理工公开课 - 化学原理课程节选

But, of course, what you saw in recitation, and hopefully, what you can now think very quickly by looking at this, is that this is not the only configuration of pi bonds that we could have in benzene.

当然，你们在习题课看到过，你们通过看这个可以很快的想到，这不是苯环里,唯一的π键构型。

麻省理工公开课 - 化学原理课程节选

And now the force, in its most general term / is q1q2 over 4 pi epsilon zero, which is the conversion factor r squared.

库仑力的最基本形式,就是，其中r是一个变量。

麻省理工公开课 - 固态化学导论课程节选

Some mathematicians believe that if we could only find some pattern in pi, even some hint that there were more fours than sevens, it could lead to a huge breakthrough in our understanding of the universe.

BBC: 3.14 and the rest

Lulis Leal, 47, of New York, is also getting in on the pi memorization action.

CNN: On Pi Day, finding strength in numbers

Simply put, if we build the Raspberry Pi in Britain, we have to pay a lot more tax.

FORBES: Raspberry Pi and Insane Trade Rules