查询词典 cavitation

Results: Current of 1 mA, 210 s could cause necrosis and cavitation in the dorsal funiculus, resulting in bilateral corticospinal tract injury; rats with electrolytic lesions exhibited declined motor function with decreased Tarlov score, increased Ashworth score and reduced inclined plane angle, the HRP labeled neuron counts in motor cortex were also significantly lower in the lesioned group than sham-operation group.

结果：1 mA， 210 s的损伤电流，可在脊髓后索造成神经组织坏死，形成空腔，使双侧皮质脊髓束纤维受损；术后1周、2周、3周观察，电损毁组大鼠运动功能显著低于假手术组，表现为后肢运动评分下降，Ashworth 肌张力评分增大，斜板实验角度下降；电损毁组运动皮质标记神经元计数也显著低于假手术组。

When high-intensity ultrasound acts on a liquid medi um, the cavitation can produce a high temperature above 5 000 K and a high press ure about 50 MPa at local sites, accompanied by a forceful impact wave and a jet with 400 km/h. The mechanical action can generate mechanical movement with high frequency whose acceleration can be 1 500 times of gravitational acceleration.

功率超声作用于液态媒质时，空化作用会在局部点产生 5 0 0 0K以上的高温和 50MPa左右的高压，并伴有强烈的冲击波和时速达 40 0km的射流，机械作用会产生高频变化的机械运动，加速度可达重力加速度的 1 50 0倍，这些独特的效应令其在化工领域中的应用越来越广泛。

The average depth of erosion on gritstone for cavitation water jets is 2 times as much as common water jets, and its mass erosion is 7 times as much as common water jets, and its diameter of erosion is 2.3 times as much as common water jets.

对于含有空泡的磨料射流，围压增加空化噪音减少，泵压增加空化噪音增加；有效靶距直径比增加，对花岗岩的冲蚀深度与冲蚀质量存在一最优有效靶距直径比；在最佳冲蚀时间下，较纯水空化射流工作效率提高2倍。

To widen the range of the plane gates,it is very much important for plane gates to study hemline cavitation and solving measure.

为了扩大其适用范围，对阀门底缘空化特性及改善措施进行综合研究是很有十分重要的。

Zwieniecki and Holbrook 1999, Canny et al. 2001, recording diurnal variation in conductance in situ (Zwieniecki and Holbrook 1999, Bucci et al. 2003, Domec et al. 2006), and inducing cavitation by drying plants in the laboratory Hacke and Sperry 2003, Stiller et al.

1998年， zwieniecki和霍尔布鲁克日前， 1999年，憎恨等， 2001 ），记录昼夜变化在电导原位（ zwieniecki和霍尔布鲁克日前， 1999年bucci等人， 2003年多梅克等人2006年），并诱导蚀干燥植物在实验室（ hacke和sperry 2003年， stiller等人2005年）。

Numerical simulation of cavitation in axial-flow pump under large-flow condition has been conducted by calculation Eulerian-Eulerian homogeneous model and Navier-Stokes equation with RNG turbulence model in this paper.

江苏大学能源与动力工程学院，江苏镇江 212013摘要：本文利用Navier-Stokes方程、RNG 湍流模型和欧拉-欧拉均相流模型，对轴流泵偏大流量工况下的空化流动进行了数值模拟。

Pressure characteristics and condition of cavitation incipience were analyzed.

在沿固体表面法线方向减速运动阶段，由于液体离开固体表面的惯性使得液体与固壁面间产生低压，当固体表面运动加速度超过某个临界值时，液体因压力低于空化临界压力而发生空化，空化与固体表面结构及液体流动特性有关。

The results of numerical simulation show that the pump with the variable-pitch inducer can improve the anti-cavitation performance.

模拟结果表明，磁力驱动冷凝泵吸入口配置变螺距诱导轮可以有效提高抗汽蚀性能。

Moreover, satisfactory cavitation performances were achieved by using the proposed method to design the variable-pitch inducer.

按照该方法设计的诱导轮可获得良好的汽蚀性能。

2The infectant of vegetable surface can be cleaned out effectively by cavitation erosion which produced when air bubbles collapse and complex turbulencewhich caused by air flow.

气泡溃灭时产生的气蚀和气流引起水的翻滚、漩涡等复杂的扰动能有效的清除蔬菜表面的污染物。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失