空泡的

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。

Employing the finite difference calculus, the cavitation bubble pulsating performance with the change of liquid viscosity, gas content, surface tension and condensability is obtained.

在系统地研究固壁面附近空泡溃灭过程的基础上，提出并研究了射流阈值、空泡在第一次和第二次脉动过程衰减蚀除机理以及空泡溃灭周期延长因子等问题。

Well I do this in my slumber summer I ain't none of these half-assed newcomers, you know how I do summer I drop heat, when you bring the sun up The combo make niggaz act up, I pick the gun up Niggaz back up; they know I'm not no fronter I don't talk shit, I just flip it +Un+ ya Sorry Lance, I'm just trying to advance my quotes I ain't making you the butt of my jokes But let's not stray from what I came to say To my beloved, think we need some time away They say if you love it, you should let it out its cage And fuck it, if it comes back you know it's there to stay It's tugging, at my heart, but this time apart is needed From the public, who should've gave me the pulitz' Instead gave me they ass to kiss But you know me, thugging 'til the casket dips But still shine light down on all my peers I know they weird... some queer, I still want them to share And all the success I received, I know you can't believe I still love 'em but they don't love me They like the drunk uncle in your family You know they lame, you feel ashamed, but you love 'em the same It's like when niggaz make subliminal records If it ain't directed directly at me, I don't respect it You don't really want it with Hov, for the record I put a couple careers on hold, you could be next kid Keep entering the danger zone You gon' make that boy Hov put your name in a song If you that hungry for fame, motherfucker c'mon Say when, take ten paces and spin But on another note,'bout to take another vaca' On another boat, goddamn a motherfucker rode His way out the hood, and I pray that I stay out for good But any day you know a nigga could Try and play like he Suge, then I gotta play like Dutch Schultz You pass the dutchie, I blast you, trust me Niggaz can't fuck with me I'm in a good mood, you lucky, I got a good groove And I ain't trying to fuck my thing up But I will lay down a couple green bucks, get you cleaned up Now I'm +Pulp Fiction+, Colt four-fifth and Young niggaz that blast for me/blasphemy, no religion Listen here summer baby, I just believe it's the right thing to do I got a brand new bitch, corporate America She showing me a lot of action right now And I know you put me on my feet and all, but I mean, it's time for me to grow You gotta let me go baby, you gotta let me go I'm done for now, so one for now Possibly forever, we had fun together But like all good things, we must come to an end Please show the same love to my friends Dear summer

好，我做这个，我沉睡的夏天，我不是这些半assed新人你知道我怎么做我夏季降热，当你把在太阳升起的二合一作出niggaz法，我拣了枪niggaz后盾；他们知道我不是没有一线，我不说屁话，我只挑它++联合国娅对不起长矛，我只是试图推进我国引号，我是不会令你天大的笑话我，但让我们不要再流浪从我来告诉亲爱的，认为我们需要一些时间，他们说，如果你爱它，你应该让出它在笼中，他妈的，如果他回来了，你知道它的存在，以保持它的拉着，在我的心但这个时候，除了需要来自公众，谁已经给我的pulitz '反而给我的驴子，他们的亲吻，但你也知道我， thugging '胡麻的椟点头，但仍焕发轻，取缔所有同行我知道他们怪异……有些奇怪，我仍然希望他们能够分享和所有的成功，我刚收到我知道你不相信我还是爱'统，但他们不爱我，他们像喝醉了，在叔叔你的家人你知道他们跛了，你会感到羞愧，但你爱的电磁相同它就像niggaz潜意识作出记录，如果不是直接针对我，我不尊重它，你真的不希望它与hov ，根据纪录，我把一对夫妇的事业停摆，你可以在未来保持跑步进入危险地带，你健在'，使男童hov把你的名字一首歌，如果你饿了，对名利，你娘c'mon时说，要花十年的腾飞和自旋，但在另一份说明，'布特采取另空泡的另一条船，福清一娘骑着出路的方巾，我祈求我留出好的，但有一天你知道了nigga可以试着玩像他素，然后推荐我喜欢扮演荷兰人舒尔茨递过dutchie ，我爆你，信任我niggaz不能他妈的，我用我的心情好，你运气好，我有一个好槽，我是不是他妈的我的事了，但我会打下夫妇绿钱，你得到清理，现在我纸浆+小说+， 1485五分之四和年轻niggaz爆我/亵渎的，任何宗教听听这里夏季宝宝我只是认为这是正确的事情要做，我有一个全新的荡妇，企业界她展示了我许多行动，现在，我知道你把我站起来和所有的，但我的意思是，它的时候，我成长你推荐，让我去宝宝推荐你让我走我不行了，所以一人，现在可能永远我们玩在一起，但象所有的好东西，我们必须走到了尽头请你拿出同样的爱，我亲爱的朋友夏天

Mol·L~(-1) individually and also with both heavy metals present. Plasmolysis, concentrated cytoplasm, disappear ance of the cristae of mitochondria, ambiguity of framework and destruction of mitochondria envelope were all symptoms of root cells under Cu stress; hollowing cells was also found in Cd treatment, and there existed some different granule in these hollowing cells.

铜使根细胞产生质壁分离、细胞质浓缩、部分细胞空泡化，使线粒体脊突消失、结构模糊、外膜破坏；镉使根细胞空泡化，并在部分空泡化的细胞里产生大小不等的颗粒状物；铜、镉交互污染使根细胞受害程度加深，并兼有两者的受害症状特征：线粒体结构彻底破坏、空泡化细胞里的颗粒物更大电子密度更高、质壁分离现象更普遍、质膜上的颗粒物沉淀更大。

The nuclei were of low to intermediate nuclear grade with minimal nuclear pleomorphism. Thirteen of 17 cases (76%) were associated with conventional high-grade invasive urothelial carcinoma and 9 cases showed very focal intracytoplasmic vacuoles mimicking signet ring cells.

瘤细胞核的核级为低到中级，伴轻微的多形性。17例中有13例（76%）与常见的高度侵袭性的尿路上皮癌相关；有9例含灶性胞浆内空泡的瘤细胞，类似印戒细胞。

The growth of bubble cloud experiences swelling and compressing, reinflating and recompressing, collapsing and falling in the cavitation water jets or abrasive water jets with bubble.

在纯水空化射流与低浓度的磨料射流中，空泡云的发育过程经历了空泡云的膨胀、压缩、再膨胀、压缩、溃灭的几个过程。

In this paper, the acoustic characteristic of bubbles and the interaction with tissue are studied by the experiments of sonoluminescence, the simulations and comparison of dynamics characteristic of gas bubbles and shell encapsulated bubbles, and the interaction between bubbles and tissue using single-frequency mode and dual-frequency mode ultrasound.

本文从空化气泡的声致发光实验、理论求解和比较带球壳微泡和空化气泡的动力学特性，和微泡在单双频超声换能器下的与生物组织的作用效果出发，研究微泡的超声特性以及微泡对生物组织的作用效果。

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。

Based on Wavelet Packet Analysis and Smoothed Pseudo Wigner-Ville Distribution, the experiment data is time-frequency analyzed. The experimental results indicate that the amplitude of the laser-induced acoustic waves increases with the laser energy; the frequency coverage is from 0 to 150 KHz, and in the meantime there is a peak located at about 25 KHz. In addition, the spectrum and the peak of frequency are basically stable in spite of the change of laser energy and target texture.

从基本的空泡动力学理论出发，推导了空泡各特征参量之间的关系，进而对空泡动力学模型进行了修正；采用有限差分法对空泡脉动进行数值模拟，得到了空泡脉动特性随液体粘性、空泡含气量、表面张力以及可压缩性的变化规律；实验上采用光偏转测试装置探测了激光空泡脉动以及空泡溃灭的细节过程，进而分析了液体粘性和作用激光能量对空泡脉动周期、泡半径及泡能等特征参数的影响。

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。