不成形的

But the rolling theory and design methods of abnormity section ring are scarce, and it is not sufficient for need of development.

而关于异形截面环件轧制成形理论和技术设计方法的研究尚处于起步阶段，远远不能满足其轧制成形生产发展的需要。

What makes iPC S20 different from other AiO is its highly configurable design where the frequently-changed components such as hard drive and memory, can be changed without hassles.

别说一体成形电脑带给大家方便不需要考虑元件更换这些事情，但你去光华看看就是有人买 AiO 的时候绝对会问「能不能换硬碟呢？」这样的问题。

Taking the fiber coupler as represent, aiming at the performanceproblem of the fiber coupler which is used in the market, such as theoptical performance differences of accepted products, technologicaloptimization and stability reflected by the low rate of finished products,how to reduce excess loss, and so on. From the view of manufacture of rheological formation, the research of experiment and theory has beendeveloped. The effects of rheological technological parameters such asdrawing speed and fused temperature on the optical performance,microstructure and the process of rheological formation have beeninvestigated. It is discovered that the present heating mode of combustinggas can\'t satisfy with the rheological manufacturing technological needof high performance fiber devices. A new resistance heating system is putforward, designed and manufactured, and a new fused biconical tapermachine is developed.

论文以光纤耦合器为代表，针对目前市场上广为应用的光纤器件存在的性能问题，如合格产品的光学性能差异，成品率不高所反映的制备工艺优化与稳定问题，如何进一步降低附加损耗等，从光纤耦合器流变成形制造的角度，分析了流变制造工艺参数如拉锥速度与熔融温度及其扰动对流变制造成形过程、微观结构与器件光学性能的影响，发现现有燃烧气体火焰的加热方式不能满足高性能光纤器件的流变制造技术要求，提出、设计并制造了一种新型的电阻加热系统和熔融拉锥机。

But the shadow was vague, and formless, and indefinite, and was the shadow neither of man nor of God- neither God of Greece, nor God of Chaldaea, nor any Egyptian God.

但那影子仍若明若暗，虚无缥缈，毫不成形；既不像人也不像神——不像希腊的神，不像迦勒底的神，也不像埃及的任何神。

And the forming limit stress diagram which established with limit stress is independent on the strain paths and it is more convenient and practical to use as the criterion of forming limit under complex strain paths.

以极限应力构成的成形极限应力图不受应变路径的影响，作为复杂加载路径的成形极限判据更加方便和实用。

And the effects of two kinds of bulge processes on the thickness distribution and forming limit were compared.It is concluded that proper application of forward-backward bulge can improve the uniformity of thickness distribution and greatly increase the formin...

结果表明，采用合理的正反胀形可以很好地改善成形件的厚度不均匀性并大大提高成形极限，实验验证了仿真和实验结果相吻合。

In this paper, detailed experiment was conducted on a model of cable dome with diameter of 4.8m, and the behaviors of model in the form finding process and subjected to nonsymmetrical loads are investigated.

本文通过对一直径为4.8m的Levy型索穹顶模型的成形与加载试验研究，得到了在成形过程中和不对称荷载作用下结构的内力和变形规律。

From the angle critical force ,this thesis analyses the stability of the formation of axle shaft spline in the extrusion and the calculation of the constraints available after losing stability.

从临界力的角度入手分析花键半轴在挤压成形时的稳定性及失稳后可增加约束的计算，研究表明半轴花键实现精密挤压成形不稳定时可增加约束来解决失稳问题。

Furthermore, according to the simulated results, the deformation behavior of laser curve bending process is explained theoretically from the thermo-mechanics point of view.

一般来说，激光成形是小应变小变形区成形，材料因变形而产生的内热可以忽略不计

Laser Cladding Rapid Forming is a new developed technology on the basis of laser cladding and rapid forming in the recent years. In LCRF the substrate and the metallic powder fed synchronously are melt by laser beam and the metallurgical combination is formed, then the compact part with regular figures is manufactured layer by layer on the substrate. LCRF has some special advantages, such as high integration, high production efficiency, wide range of processable materials, no pollution to the environment and so on.

激光熔覆快速成形技术是近年来在激光熔覆技术和快速成形技术的基础上发展起来的一种新技术，通过激光熔化基体和同步送来的粉末，使粉末和基体形成冶金结合，并且在基体上堆积成有规则形状的致密的零件，具有集成度高、生产效率高、柔性好、可加工材料广泛、不污染环境等优点，因此受到了越来越广泛的关注。

The big eared hedgehog, the little owl, the sand gecko, the three-toed jerboa, and every show needs a villain - saw-scale - the viper!

大耳刺猬，小猫头鹰，沙壁虎，三趾跳鼠，每场戏都需要反派角色：蝰蛇。

Plasmodiophora brassicae ; resting spores ; density gradient centrifugation of sucrose ; ultrasonic disruption

根肿；休眠孢子；蔗糖密度梯度离心；超声波破碎