变体的

The designing way of this paper about the forebody and afterbody of aerocraft is based on the wave-rider theory, so design the aerocraft upper and down surface separately, besides keeping the length and thickness of forebody and afterbody constant, to some extent ensure the whole aerocraft design target and avoid the conflict with other disciplines, The flow solver takes use of Euler equations, combining with the technique of the unstructured dynamic meshes.

文中对飞行器前后体设计思路基于高超音速乘波体的思想，将飞行器上下表面进行分离设计，在前后体的长度厚度以及发动机的位置保持不变的条件下，较大程度避免了飞行器整体外形布局的改变，从而一定程度上保证了总体设计的目标，大大缓和了与飞行器其他学科设计时的冲突。

The relationship between stress and strain of concrete in prestressed concrete bridge s is written as algebraic form within load duration and the equilibrium equations of internal force and compatibility conditions are introduced.

首先将预应力混凝土桥梁中考虑收缩、徐变影响的任意时刻混凝土应力、应变关系在持荷时段内写成代数形式，引入内力平衡方程及变形协调条件后，提出了计入截面上钢筋位置、配筋率、预应力钢筋松弛、混凝土弹性模量随时间变化等影响的徐变效应分析的全量形式自动递进法，并建立了计算式，适用于任何形式的收缩、徐变特性表达式；基于建立的全量形式公式，可方便地求解任意时刻混凝土、钢筋的应力与应变和梁体竖向变形。

The valence electron structure of medium chrome cast iron matrix is set up and the effect of Si on medium-temperature phase transformation is analyzed by using empirical electron theory of solids and molecules.

此文建立了290Cr8Si2中铬铸铁基体的价电子结构，运用固体与分子经验电子理论分析了中铬铸铁中Si对铸铁中温相变的影响，分析和实验结果表明，290Cr8Si2中铬铸铁基体含C、Cr、Si的-γFe晶胞中，C原子与Si原子的结合力强于C原子与Cr原子的结合力，中铬铸铁中较高的含Si量降低了铸铁基体的含Cr量，进而降低了中铬铸铁的淬透性。

The effect of Al on microstructure evolution of a hypereutectoid steel(0.97%C) during deformation of undercooled austenite was investigated by hot uniaxial compression tests.

利用Gleeble 1500热模拟试验机进行单轴热压缩实验，研究了合金元素Al对过共析钢缓冷相变和过冷奥氏体动态相变组织的影响。

The equations of two classes of 3D polynomial maps that are equivariant with respect to the rotational symmetries of either a regular tetrahedron group or a regular octahedron group are strictly given, on the basis of which the properties of the general Julia sets created by these 3D polynomial maps are discussed and proved.

从理论上分析并证明了三维多项式映射满足等变的条件，精确地给出了关于正四面体群和正八面体群具有旋转不变对称性的两类三维等变映射的具体公式，在此基础上讨论并证明了三维多项式映射的广义Julia集所具有的性质。

The effect of Stress applied at certain temperature on low temperature phase transformation of T91 was studied with Baehr DIL805A/D high-resolution differential dilatometer. According to the results of dilatometric measurement and microstructure observation, kinetics of phase transformation was obtained.

采用Baehr DIL805A/D高精度差分膨胀仪测量线膨胀行为与微观组织分析获取了T91铁素体耐热钢低温相变过程动力学信息，研究不同温度（760、650和440℃）下施加不同压应力（100、150和200 MPa）对低温相变过程的影响。

It was also shown that the properties of the martensitic steel obtained by impact has been improved.

实验表明，冲击后马氏体相变材料的力学性能发生很大变化，硬度及强度可提高2倍，在一定应变率下冲击后，断裂韧性也有所改善，这对利用冲击相变改善材料性能有重要意义。

However, the coarsened and less dispersive Ti〓Ni〓 precipitates do not affect the morphology of the R phase and provide the preferred nucleation sites for the martensite, but they prevent the martensite from its auto-catalytic nucleation and growth and, consequently, the martensite develops discontinuously in a clustering nature.

低弥散度的粗片状Ti〓Ni〓相不影响R相的形貌，而且为马氏体相变提供优先形核部位，同时又制约马氏体的自促发成核和生长，以致使马氏体呈群团状的区域式不连续发展。

The osculating relation exists between rockfill fabric tensor and stress tensor, which have been proved theoretically in this paper. So creep mechanism and deformation law of rockfill can be gained from varying of fabric tensor. As a result creep mechanism of rockfill creep may be revealed from microcosmic view.

堆石体组构张量与应力张量和应变张量有密切的关系，从组构张量的变化可以导出堆石体的变形机理和规律，从而揭示堆石体材料流变变形的细观机理。

The low homogenization temperatures indicate that the petroleum is encapsulated at the cooling stage of the diabases that have intruded in the Es3 strata when the interaction between ground water and the feldspars resulted in alteration.

测得其中部分粒径较大的石油包裹体的均一温度 th=79～ 82 ℃，表明这些石油包裹体是辉绿岩体侵入 Es3地层冷却以后受地层水作用在发生的多种蚀变反应的过程中长石的节理、裂隙愈合带封存了渗入的烃类物质而形成的。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。