形成空泡

The CFD method was applied to calculate and simulate the form and action process of the cavitation at the representative character of the cavitation erosion on the surface of the hydraulic turbines.Some argumentation was presented that micro jet impacted the wall with a certain degree when bubble collapsed with the result that the maximal strain of the wall annularly distributed the local of the boundary touching the micro jet.Cavitation was gradual to develop regionally at the mode of chain reaction and di...

针对水轮机叶片表面气蚀的典型特征，利用CFD方法进行仿真计算，模拟气蚀形成和作用过程；根据模拟计算结果提出了新观点：空泡溃灭发生微射流以一定的倾角冲击壁面，壁面材料产生的最大应变在流束边界局部区域，呈环状分布；空泡气蚀在局部区域是渐进的，以"连锁反应"形式扩展，具有一定过流环境的分布特征；典型的冲蚀缺陷形貌是空泡气蚀在不同阶段的产物。

In DM group, decreasing of density of axoplasm, deposition of fat droplets, swelling and vacuolization of mitochondria and separation or disintegration in lamellar of myelin sheath of the sciatic nerve fiber could be observed, which could be partially improved by EA and KBK.

电镜形态学分析见造模两个月的糖尿病大鼠坐骨神经髓鞘板层有分离现象，线粒体嵴紊乱，有的线粒体嵴完全消失形成空泡线粒体，轴浆内有大量脂肪颗粒沉积；经电针和渴痹康治疗后能减轻这些病理改变。4。无论是电针治疗还是渴痹康治疗均无明显降血糖作用。

With a cavitating model established for N-S equations from cavitation theory, cavitation evolution on the surface of a hydrofoil is developed: incipience of cavity, cavity growing, reentrant flow appearing, cavity retracting, shedding and smaller broken cavities moving downwards with the main flow.

根据空化流原理，建立了基于N-S方程求解的空化模型，利用这个模型计算了空化在翼型表面的演化过程：初生、长大、形成回注水流、空穴回缩、减小、脱落，以及小空泡随主流向下游运动的现象。

The process involves extension and invagination of the plasma membrane to form small vesicles in pinocytosis or vacuoles in phagocytosis.

胞饮作用形成小泡囊，胞噬作用形成空泡。

Observ ed with transmission electron microscope and scanning electron microscope, t he apoptotic nuclei showed the typical morphological feathers of apoptosis: cond ensation and margination of chromatin, bubbling of nuclear membrane and apoptoti c bodies.

在透射电子显微镜和扫描电子显微镜下都观察到凋亡的细胞核呈现典型的凋亡形态学特征，例如染色质的凝集及趋边化，细胞核表面形成空泡化结构并有大量的凋亡小体结构出现。

This paper briefly introduces the current development of supercavitating torpedoes in the world,and explains some confusable terms,including cavity,supercavitation, natural supercavitation ,air supercavitation and cavity number.

在简要回顾各国超空泡鱼雷发展概况的基础上，解释了几个易混淆的与空泡有关的新术语(空泡、超空泡、自然超空泡、通气超空泡和空泡数)，分析了超空泡的形成机理和特点，详细阐述超空泡鱼雷在总体结构和性能、动力推进、控制系统和弹道形式等方面的技术特点，概括超空泡鱼雷与普通鱼雷在结构外形、流体动力布局、系统组成和工作特性等方面的不同之处。

After 72 h, MCF-7 cells which were treated by PE had become bigger and flatter meanwhile the appearance of vacuolization and particles which are the specific patterns of the cell senescence were also observed.

结果发现藻红蛋白作用 72 h 后，细胞呈现变大变扁平，细胞内形成空泡、颗粒增多等明显衰老形态。

HCV particles are formed by "bud mutation" of HCV in the cytoplasmic vesicles of B-lymphocytes.

病毒在感染细胞胞质空泡部位合成和组装，以芽生方式进入胞质空泡内形成病毒颗粒。

Themotion equations of a bubble near a plane wall have been established with the lift forceand wall effects on the drag force taken into consideration.

我们在全面考虑壁面对空泡运动粘性阻力和升力影响的基础上，建立了空泡在近壁区内的运动方程，计算结果表明由于壁面的存在将阻滞空泡沿水流方向和垂直水流方向上的运动，即有滞留空泡在空化形成点，减缓空泡逸离空泡发生区的作用。

Assuming fluid is and viscid and slightly compressible, bubble collapse near rigid boundary and free surface is simulated, displaying characteristics such as formation, penetration and impact of reentrant jet as well as vortex ring and bubble rebound.

采用粘性、微可压流体模型，数值模拟了空泡在刚性边界和自由面附近溃灭及空泡溃灭后流动的发展，显示了空泡溃灭过程中的凹陷射流形成、空泡贯穿、射流冲击、涡环的形成和空泡回弹等流动特征，提出空泡回弹的另一种机制是凹陷射流冲击形成的旋涡。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。