系统发生

Because of the universal existence of parameter perturbation and the fault ineluctability for actuator and sensor, it is more important and practical to study robust fault-tolerant control of parameter perturbation for linear system with time-delay.

由于参数扰动的广泛存在性以及执行器和传感器发生故障的不可避免性，使得研究具有参数不确定的时滞系统的鲁棒容错控制问题具有更重要的现实意义。

Three axis optical tracking test table is a kind of powerful instrument used to reproduce the flying posture of flying weapons in laboratory.

摘要三轴光学跟踪试验转台是一种在实验室条件下复现飞行器或导弹在空中飞行姿态半实物仿真的有力工具，它和目标发生装置组合在一起模拟导弹跟踪目标的过程，可以真实地模拟出导弹等飞行器在空间的各种姿态和动力学特性，从而对其传感器件、控制系统和执行机构等硬件设备的性能加以测试和评价，为飞行器的研制、改进和再设计提供各种参考依据。

ABSTRACT Three-axis flying posture simulator is a set of precise and sophisticated equipment with important significance of economy and national defence. TFPS is a kind of powerful instrument used to reproduce the flying posture of flying weapons in laboratory. TFPS, together with equipment producing infrared target, simulates the attacked target and flying missile, which can really simulate the various flying postures in space and dynamic characteristics. Thus, the performances of sensors, control system and actuator and so on can be tested and evaluated, which provides various reference bases for developing, improving and redesigning flying weapons.

三轴飞行姿态仿真转台是具有重大经济价值和国防战略意义的高精尖试验设备，它是在实验室条件下复现飞行器或导弹在空中飞行姿态的有力工具，它和红外目标发生装置组合在一起模拟袭击目标和飞行导弹，可以真实地模拟出导弹等飞行器在空间的各种姿态和动力学特性，从而对其传感器件、控制系统和执行机构等硬件设备的性能加以测试和评价，为飞行器的研制、改进和再设计提供各种参考依据。

However, there might be some insufficience in those researches, such as no systematical theoretic research and corresponding filed and lab experiments have been carried out on formation conditions of fluidization of landslide, or detailed classification and discussion been made on occurrence and development of it.

但是，这些研究还存在一些不足之处，例如对滑坡流态化的形成条件方面，还没有系统的理论探讨和相应的室内外实验研究，对滑坡流态化的发生发展过程方面，也还没有详细的划分和论述。

Molecular dynamics simulation was carried out to study transformation pseudoelasticity in NiAl alloy with a initial B2 structure, using EAM type interatomic potential for NiAl.

利用NiAl合金的嵌入原子势，进行了B2结构NiAl单晶中相变伪弹性的分子动力学模拟模拟过程中系统的径向分布函数和键连线原子分布图的变化表明，在外加拉应力的作用下，B2结构的奥氏体向L10结构的马氏体转变，马氏体在长大过程中发生了变体间的转化与合并，不同取向的变体之间由于自协调效应形成共格的孪晶界面。

In this case, it is possible to place one video card with interface PCI express x16, which possesses two-slot cooling system.

在这种情况下，是有可能发生的一个视频采集卡接口pci express x16接口，它拥有双插槽散热系统。

Therefore, CRP maybe participates in the development of atherosclerosis not as a solo direct pathogenic factor but as an intermediator. To date, quite a little research only recognized CRP as a common plasma protein to investigate whether CRP could induce inflammation in endothelium, but ignored special structure and crucial physiological function of CRP.

目前，相当多研究仅仅把CRP作为一种普通血浆蛋白来讨论其能否诱导内皮系统炎症发生，忽视了CRP的特殊结构和其重要的生理功能，而如果探讨CRP在动脉粥样硬化中形成起保护性作用还是破坏性的作用，就有必要充分考虑CRP的结构和生理功能。

A source of variation that is not inherent in the system, is not predictable, and is intermittent.

并非系统固有的、无法预见并间歇发生的偏差的一种来源。

Eventually, as the balance of energy in his mental system shifted, he could play with dogs without any internal resistance.

最终，当他思想系统中的能量的平衡发生转移时，他就没有任何内心的阻力和狗玩耍了。

The former, intracranially complements patients some factors, most frequently with TH gene to compensate scanty of intrastriatal DA and improve the symptoms of the patients, while have little resistance to the progressive degeneration of dopaminergic neurons; The latter provide variety of neurotrophic factors, most specific being the glial cell-line derived neurotrophic factor , to protect the residual DA neurons in the nigrostriatal system from further pathogenic injuries, while have little benefit to those DA neurons with irreversible damage, and them cannot offset the already-existing symptoms.

前者是给宿主脑内补充某些因子，主要是DA合成过程中的限速酶TH基因，以补充纹状体内DA含量的不足，减轻患者的症状，但对DA能神经元的进行性退变没有治疗效果；后者则是提供各种神经营养因子其中最具特异性的为GDNF，以保护黑质一纹状体系统内剩余的DA能经元免受病因的继续损害但对已发生不可逆性损害的DA能神经元并无拯救作用，无法消除已出现的症状。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。