We're already using it up in this pi bond here, so that means we're limited to only two other spots on the molecule, so we have three.
我们已经把它用到这个π键里去了，所以这意味着,我们在分子里只剩下两个位置，所以一共是三个。
THE feud between Porsche and Volkswagen, and between the Pië ch and Porsche families that own most of them, had dragged on for two years.
保时捷和大众、皮耶希和保时捷这两个占各自大部分股权的家族之间的争执已经拖拖拉拉了有2年之久。
You start with the square of an electron's charge, divide it by the speed of light and Planck's constant, then multiply the whole lot by two PI.
一开始将电子电荷平方，再除以光速和普朗克常数，然后将总数乘以2个圆周率。
Indexes: 1 PI REPLY_CONTEXT (5) : optional, used if the process has a two-way interface.
索引数量：1pi REPLY_CONTEXT(5)：可选，只在流程使用双向接口的情况下使用。
The angle actually goes from minus pi over two to pi over two.
实际上，角度取值范围是从-π/2到π
Two years ago, Tammet became famous for reciting pi to 22, 514 decimal places with the same ease that the rest of us can reel off 3.142.
两年前，Tammet因为背诵 π至小数点后22514位而出名，而且他背起来就像我们背到3.142那么容易。
So the angular velocity omega, T which is two pi divided by T... 5 If you take two pi and divide it by 2.5, 5 it just comes out to be roughly 2.5.
因此角速度，2π除以。,如果你用2π除以2。,大概结果就是2。
n It takes discrete values, multiples of some integer n, and the multiplication factor is the ratio of the Planck constant divided by 2 pi where n takes one, two, three and so on.
这些离散的值乘以整数，乘积因子,是普朗克常数除以2π,其中n可以取1，2，3，等等。
So, that's cosine theta d theta. And, well, if you do things with substitution, which is the way I do them, then you should worry about /2 the bounds for theta which will be zero to pi over two.
所以dx=cos，θdθ，如果用变量替换法来做，接下来就要考虑θ的取值范围,它是从0取到π
You take two pi times the square root 85 of R over d and you find 1.85.
2π乘以R/d的平方根,得到1。
The control scheme consists of two PI voltage controllers and one hysteresis current controller.
其控制系统由两个PI电压控制器和一个滞环电流控制器组成。
Secondly, two neural networks controllers for the ramp control are developed, which are the direct controller and the PI controller.
其次，论文设计了两种用于入口匝道控制的神经网络控制器——直接型和积分型。
This paper presents a power system intelligent PI stabilizer, which consists of two -layer decision unit, distinguishing unit and intelligent PI control unit.
本文提出一种电力系统智能PI稳定器的设计方法，它由两层决策系统、识别环节及智能PI控制环节组成。
In conventional SVM-DTC, two PI controllers are used to generate the two components of reference voltage vector.
传统SVM - DTC中使用两个PI控制器来产生参考电压矢量的两个分量。
On the surface, the film is about Pi's tale of survival – yet Life of Pi holds so much more within its two-hour running time.
表面上，这部影片讲述的是派的生存奇迹，而《少年派的奇幻漂流》在两个小时中讲述的远远不止这些。
Based on the model reduction theory in frequency-domain, two predictive PI (d) controller design methods for high order processes with time-delay are proposed.
利用频率域模型降阶理论，提出了高阶时滞对象的预测PI (D)控制器两种设计方法。
The actual debugging experiments of two kinds of fuzzy-PI compound controller are carried on, and the experimental results are analyzed and summarized.
对两种模糊- PI复合控制进行了实际的调试实验，并对实验结果做出了分析和总结。
The result demonstrated the accordance of this two methods. The dynamics of blood flow in hemodialysis vascularity was evaluated by pulsatility index(PI) and resistence index(RI).
对搏动指数（PI）和阻力指数（RI）用于评价透析血管血流动力学方面的变化作了初步分析。
The method presents the parametric expression for the gain matrix of the high-order PI observer. The contained parameters satisfy the needs of two constraints and are completely free as well.
该参数化方法给出了该类观测器增益矩阵的参数化表达式，其所含参数除了满足两个约束条件之外是完全自由的。
Two PI adjustors were applied for wire feeding velocity control, one performed motor armature voltage feedback, the other one executed arc voltage feedback to determine the given velocity.
送丝速度通过两个PI调节器进行双闭环控制，分别进行电枢电压反馈和电弧电压反馈。
Two PI adjusters were applied for wire feeding velocity control, one performed motor armature voltage feedback, the other one executed arc voltage feedback to determine the given velocity.
送丝速度通过两个PI调节器进行双闭环控制，分别进行电枢电压反馈和电弧电压反馈。
Two parts form the UDI: the mandatory device identifier (di) and the conditional production identifier (PI).
UDI由两部分组成：强制性的器械标识符(DI)和受条件限制的生产标识符(PI)。
Two PCR amplified fragments were found to be tightly linked to Pi-h-1 (t) by RAPD analysis. of near isogenic pools of DNA from F2 plants.
应用近等基因池DNA和随机引物，经PCR扩增和共分离分析，建立了二个RAPD片段与抗病基因紧密连锁。
The PI observer has two feedback loops, a proportional loop and an integral loop of the estimation error; in this way, the PI observer can estimate not only the states but also the unknown inputs.
该观测器包含有估计误差的比例和积分回路，可同时得到状态和未知输入估计。
The PI observer has two feedback loops, a proportional loop and an integral loop of the estimation error; in this way, the PI observer can estimate not only the states but also the unknown inputs.
该观测器包含有估计误差的比例和积分回路，可同时得到状态和未知输入估计。
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