| 1. | In the systems of pnn - pt , the content of perovskite phase increased rapidly from 800 c to 850 c . the formation of perovskite phase for pnn - pt was more effective than that of pmn - pt system prepared by scm
。 ；最后再转化为钙钛矿结构的pfw 。在scm法中， pfw和州n干t的反应机理的区别是，前者形成的中间相为pbfewo 。 |
| 2. | ( 4 ) the practical measures show that : stress of pipelines accords with national demand and peak value of vibration decreases from 1mm to 0 . 2mm , whereas the inherent frequency of each phase increased generally
改造完成后的实际测量表明：管道应力符合国标要求，振动峰值从1mm下降到0 . 2mm ，各阶固有频率普遍提高。 |
| 3. | ( 4 ) in extruded shapes of 6013 alloys , the strength of alloy in with more cu content is higher than that of alloy 2 with lower cu content , because cu content was increased , the number of the transitted phase increased
( 4 )铜含量高的挤压型材合金1 ，其强度略高于铜含量低的合金2 ，这是因为铜含量增加，可能存在的过渡相相等增多所致。 |
| 4. | The results of x - diffraction showed that peak value of p - sn phase increases and peak value of cu phase weakens as the deposition time rises , the reason is that sn content of the depositions increases and cu content of the deposition decreases as the deposition time rises
亩舒婴人人夕硕十学贞极广雳8 ，三x射线衍射结果表明：随着沉积时hj的延长，镀层中b七n相的峰值增强， cu相峰值减弱，也说明镀层中锡含量在提高，铜含量在降低。 |
| 5. | Then , this thesis provide a pid control model with a phase increased tache , and the digital difference equations which were fit for digital control algorithm of amb are produced . using these difference equations , a digital control software was weaved in dsp assembly language
之后，建立了带附加超前pid控制器的模型，对该pid控制器进行了数字化，推导出了适合于数字控制的差分方程，并用dsp汇编语言编制了控制程序，实现了磁悬浮转子的稳定悬浮。 |
| 6. | The thermal shock resistance of the prepared material is explored too . processing parameters were comprehensively investigated to achieve better mechanical strength and microstructure , experimental results indicate that suitable amount of sintering aids can promote the development of sian siaona ) and increase the crystal size , while excessive sintering aids amount will exert a side effect ; biding phase increases obviously with si powder additive which greatly improve the strength of the composite
本论文着重探讨了在利用该方法制备si _ 3n _ 4 ( si _ 2on _ 2 ) - sic复合材料过程中的烧结助剂引入量、 si粉加入量、 sic颗粒级配和氮化制度对复合材料基体相生成的影响及对复合材料强度的影响，同时也初步探讨了si _ 3n _ 4 ( si _ 2on _ 2 ) - sic复合材料的抗热震性能。 |
| 7. | It is firstly found that for alloys in metastable region , with enhancement of atomic interaction energy , volume fraction and density of " phase particulate are increased , size and nucle ' ation rate of ordered phase raised , decline pace of composition in disordered matrix around the order phase is accelerated , composition order parameter and long range order parameter of ordered phase increased , i . e . process of clustering and ordering are accelerated
首次发现，随着原子间相互作用势的增加，亚稳区合金中有序相的体积分数和颗粒密度有所增加，有序相的尺寸和形核率有所提高，有序相周围的无序基体浓度的降低有所加快，有序相内的成分序参数和长程序参数有所提高，即促进了原子簇聚过程和有序化程度。 |
| 8. | The results is the following . ( 1 ) with the condition of table 4 . 1 , the low reflectance vale will move towards the center wavelenghth ( 550nm ) , the influence on refractive index of the films is very little , the extinction coefficient ( k ) have trend of increase and the thickness of the films decrease when increasing the oxygen flow . the rutile phase increase and the surface morphology is dense and smoothnes with increasing the oxygen flow
其结论如下: ( 1 )随着氧流量的增加薄膜的反射低谷向中心波长550nm处移动;消光系数k随氧流量的增加有增大的趋势;氧流量的变化对折射率的影响不大;薄膜的厚度随氧流量的增加而减少;氧流量增加薄膜中的金红石相tio2含量增多,薄膜表面由粗糙疏松变的致密光滑。 |
