查询词典 pi-dog

The catalytic properties of Ti-MWW and the reaction conditions in epoxidation of allyl alcohol to glycidol have been studied. It was found that Ti-MWW-PI synthesized under dynamic crystallization conditions has more effective catalytic performance.

对Ti-MWW 催化烯丙醇的环氧化性能和反应条件进行了研究，发现动态法合成的Ti-MWW-PI 有更好的催化性能。

CA method can provide better approximate results when the differential physical effect of Pi is considered.

当考虑到占有几率Pi的微分效应时，相干近似方法能够提供更好的近似结果。

Then the relation between the parameters of PI controller and the bifurcation point are obtained by using numerical calculation.

应用谐波平衡法推导出带PI补偿电压模式buck变换器的输入电压分岔点关系式。

What the lysine does, Dougherty and colleagues report online this week in Nature, is change the shape of the brain receptor's box, effectively making its negative charge more accessible to nicotine--a situation known as a cation-pi interaction.

Dougherty 他们在这个星期的 Nature 网站上报道说，它能够改变大脑受体"口袋"的形状，有效地使其负电荷更好与尼古丁相作用，就是所谓的阳离子—π作用( a cation-pi interaction )。

This paper presents a linear bridge circuit based on PI regulator.

提出了一种基于PI调节器的线性电桥电路，它的输出电压与电阻值的变化量成正比，而且调整方便。

Then the focus was shifted from polyacetylene to carbonaceous material, which have the same pi electrons.

此后 ，研究的重点从聚乙炔转移到具有同样的 pi电子的碳材料上。

The results showed that among the parameters clinically used by the pathologists in the diagnoses of astrocytomas,tumor size,giant tumor cell number/high power fieldand mitoses/30HPF were closely related to the DI and PI of the...

结果发现，病理学工作者在星形胶质细胞瘤诊断时所依据的各种参数中，肿瘤体积、每高倍视野瘤巨细胞数和每30个高倍视野中核分裂数与星形细胞瘤DI及PI密切相关，肿瘤平均直径越大、瘤巨细胞数和核分裂数越多，则DI和PI值越高。

MoS2 of different percentage composition was added to PI films for reduced the friction coefficient.

为降低PI膜的摩擦系数，在PI中加入不同质量比例的MoS2易作为减摩相制备复合润滑膜。

The system uses PID controller and fuzzy controller to design automatic control loops, a study of fuzzy three-element feed-water control system for a CFB municipal waste incinerator is introduced. The incinerator is faced with problems such as large-scale fluctuation of furnace heat load and low regulation resolution of main control feed-water valve. The fuzzy logic control system is applied to modulate PI control parameters according to steam drum water level to fit fluctuated heat load, the inner and outer control loops are realized in an asynchronous way to effectively decrease regulation time and improve regulation precision.

针对垃圾炉炉膛负荷波动较大，同时给水调节阀门执行机构的调节精度较低的现状，在传统三冲量串级汽包水位控制方式的基础上，采用模糊控制策略对内、外串级回路的PI控制参数进行分区域调整，强调了PI参数在被控参量处于不同范围时的分离作用，同时内、外控制回路采用异步控制方式，浙江大学硕士学位论文从而有效地减小了被控参量的调节时间，提高调节精度，使水位波动控制在△为士12~范围内。

However, during geomagnetically disturbed days the occurence of Pi pulsations in both areas increases and they have a good corresponding relation, but those in Antarctica are stronger than that in Beijing.

但在磁扰日中 Pi型脉动出现次数明显增加，还会出现在对应的小时段上。不过长城站的 Pi脉动往往比北京地区强些。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。