查询词典 pi-dog

Because of the nondirectional property of ionic bond and the fully delocalized property of pi electrons on carbon layers, translation will not change the electronic structure of carbon layers, resulting in that A-GIC and AE-GIC hare quite good lubrication as well. The electrons come from metals mainly transfer to the delocalized pi orbitals of carbon layers, and the increase of delocalized electrons will make metal graphite intercalation compound more electro-conductive than graphite itself. Because ionic bond between metals and carbon layers is weaker and its lattice energy is much less than that of typical NaCl crystal, so metals could be left from interlayers. The Mulliken populations of C-C in intercalation compounds are smaller than that of graphite, and the HOMO energy level of GIC is higher than that of graphite too. These Lead to that GIC will easier be oxidized.

由于离子键没有方向性，又由于碳层中的π电子是充分离域的，所以碳层不会由于平移而改变其电子结构，金属石墨层间化合物仍具有很好的润滑性；金属失去的电子主要转移到碳层的离域π轨道中，碳层离域电子增多使金属石墨层间化合物的导电性比石墨增强；金属与碳层间的离子键强度比较弱，其晶格能远小于典型的离子晶体，因而金属易从石墨层中脱出；金属石墨层间化合物中的C-C间Mulliken布居值小于石墨中C-C间的值，且金属石墨层间化合物的HOMO能级也高于石墨的HOMO能级，所以石墨层间化合物中的碳原子较石墨更易被氧化。

The structure and process in PI is similarly to deduction in logic. But PI has much richer structures than predicate calculus. It is a complex of logic and psychology.

PI的结构与过程类似于逻辑中的演绎推理，但它的可取之处在于它可以提供比谓词逻辑更加丰富的结构形式，它是心理学与逻辑的综合。

Nanoparticle of an appropriate proportion were homogeneously dispersed in the PI matrix, and the interfacial adhesion between the matrix and the nanoparticle was hence strong owing to the high specific surface area and reactivity of the nanoparticle. Subsequently, the molecular chains of PI attained unchanged or even increased interaction at a proper mass fraction of the nanometer particle, which contributed to improve the wear-resistance of the nanocomposites.

采用PI的原位聚合填充方法，利用聚酰亚胺与无机纳米表面较强的相互作用（如静电作用、较强的范德华力、氢键甚至化学键的形成），用非水悬浮工艺制备了无机纳米/聚酰亚胺纳米复合材料，率先用大型分析仪器全面地表征了复合材料的结构，采用原位聚合填充法制备的聚酰亚胺复合材料中，无机纳米分散状态良好；无机纳米氧化物/聚酰亚胺复合材料的结构表征显示出PI有机相和SiO〓无机相之间形成了键联型复合体系，两相相互影响；在复合体系中，单相本体的结晶结构并未发生改变；在摩擦过程中纳米氧化物没有发生价态的转变；无机纳米氧化物的加入，提高了聚酰亚胺的耐热等级；适量纳米氧化物并不影响复合材料的机械性能， 2。

In order to overcome the shortcoming of PI controller in harmonics control, the repetitive control and PI control are combined and used in the closed-loop control of TSMC; The problem of conventional repetitive controller is pointed out and a modified repetitive control method is proposed: To avoid the influence of no-periodical disturbance on the control action of repetitive controller, the error caused by no-periodical disturbance is identified and discarded.

针对PI控制器对谐波控制的不足，将重复控制技术与PI控制相结合，应用于TSMC逆变级的闭环控制中；在此基础上提出了重复控制器的改进方案：对由非周期性扰动引起的误差不进行记忆，以避免其对重复控制器的控制动作产生干扰。

Two spotted spider mite feeding induced octadecanoid signaling pathway that resulted in activation of PⅠ-Ⅱ gene and expression of relative genes, further more PⅠ-Ⅱ protein were accumulated.

二点叶螨对番茄植株的捕食激活了脂肪酸途径，导致PI-Ⅱ基因的激活，从而诱导PI-Ⅱ蛋白的积累及相关基因的表达。

PI\'s central activity is problem solving. In the system of PI, theories are sets of data structures and consist of highly organized rules, concepts and problem solutions.

PI的主要活动就是问题求解，在PI系统中，理论是一组复杂的数据结构，由高度有组织的规则、概念和问题解决方法构成。

However, some fields such as the concrete regulation mechanism of plant's reaction to Pi deficiency, the Pi transportation across tonoplast are not clear until now.

但是，在植物对磷饥饿的反应中，磷的跨液泡膜运输、植物对磷的具体调控机制等重要问题目前还没有明确的结果。

Pi Squared over Six -- Dedicated to the transcendental number pi squared over six .

丕平方超过6--专为超越数丕平方超过六年。

The Pi County China Splendor Woodware Factory was established in 1998, located at Chengdu Pi County peaceful peace land village four society, had the advanced solid wood floor to be dry, slot, paint completely automatic production line.

郫县华辉木制品厂成立于1998年，位于成都郫县安靖土地村四社，拥有先进的实木地板干燥、开槽、油漆全自动生产线。

Methods 104 patients with chronic cerebral circulation insufficiency were randomly divided into two groups.in basis of routine therapy, patients in treatment group (n=56) were treated by yangxue qingnao granules,4 g,three times a day; patients in control group (n＝48) were treated by troxerutin, 3 pills a day.the course was 30 days in two groups.the indexes of hemorrheology and mca,aca,pca, va, ba and pi were observed before and after treatment.results there were significant differences between two groups in blood viscosity, plasma viscosity, mca,aca,pca,mca and pi after treatment (p.05).conclusion yangxue qingnao granules have definite effect on chronic cerebral circulation insufficiency, and decrease and hemorrheology in patients with ccci, relieve angiospasm and improve clinical symptoms.

将慢性脑供血不足患者104例随机分为2组。在常规治疗基础上治疗组56例加服养血清脑颗粒，每次4 g，每日3次口服。对照组48例在常规治疗基础上加服曲克芦丁，每次2片，每日3次口服。2组均30日为1个疗程。观察2组临床疗效，治疗前后血液流变学指标及大脑中动脉、大脑前动脉、大脑后动脉、左右椎动脉和基底动脉的搏动指数及阻力指数的变化。结果 2组治疗后全血黏度、血浆黏度，mca、aca、pca的pi及mca的ri及总有效率比较差异均有统计学意义(p＜0.05)。结论养血清脑颗粒治疗慢性脑供血不足疗效确切，能降低ccci患者的血液黏稠度及血液流变学指标，增加脑供血，缓解血管痉挛，改善临床症状，改善脑供血不足。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。