冲击表面

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。

When abrasive grains impacted on the work piece surface, the top layer atomics are removed, plastic deformation appears at the same time.

纳米级的磨粒冲击到工件表面，在以原子级去除的同时伴随着塑性变形的发生。

RGM resistance is to use metallic glass enamel coating on the top bar magnet, has excellent impact resistance characteristics and high temperature stability, heat dissipation is good, wide range of resistance at low prices, is widely used in high-power devices, is a new generation of surface mount circuit design the best choice.

RGM 电阻是用金属玻璃釉镀于磁棒上面，有着极佳的耐冲击特性及高温稳定性，散热性好，阻值范围广，价格便宜，广泛应用于高功率设备，是新一代表面贴装线路设计的最佳选择。

The solderability of benzimidazole films on the surface of copper is investigated by solder float test. Several factors which influence solderability of the films are discussed.

采用上锡率法研究了咪唑化合物在铜表面所成保护膜的可焊性，并探讨了咪唑化合物类型、膜厚、再流焊次数及高温热冲击对该膜可焊性的影响。

Broken-rollers and stepless blad type double facer adopts combined structure which effectively overcometraditional low heat efficeency because of concave heat box when work,which improve work speed and qualit,decrease wasted board,especially suitable for light weight board.

其中碎辊式无级压载双面机采用碎辊结构，有效克服传统压载，因加热箱工作时下凹，导致热板上表面传热效率差的缺点，避免了传统压辊不平衡对纸板的冲击，从而提高了生产速度和质量，降低了废品率，更加适合克重纸板生产。

The company was equipped with many kinds of equipments including: the Direct-Reader Spectrograph, Magnetic particle inspection and Ultrasonic testing, the Hydraulic Universal Testing Machine with Computer-Screen Display. Pendulum-lmpact Testing Machine, Large Metallographic Microscope, and Large vertical lathe, Mobile Face Milling Machine ect. The measurement, precision, the surface finish, property and the internal quality of the steel castings and the ductile irons are all company with national and international standards.

公司铸钢车间采用呋喃树脂砂造型工艺、电弧炉+LF精炼炉炼钢、抛喷丸表面处理、煤气热处理炉热处理，配备有德国康诚直读式光谱仪、磁粉探伤及超声波探伤、微机屏显万能材料试验机、冲击试验机、金相显微镜等检测设备和大型立车、移动式端面铣床等加工设备，铸件尺寸、精度、表面光洁度、机械性能和内部质量均符合国家和国际标准。

Suite doorásubstrate for high-density fiberboard waterproof, and its surface by a high temperature and high pressure laminate finishes from the PVC without paint treatment, the surface smooth bright colors, but will never fade, more than 200 kinds of styles, with good noise, heat insulation, moisture resistance, impact resistance, surface properties of the use of PVC film plate, clear grain, natural, life-like; color species have black walnut, red cherry, iron peachwood, Teak, Sapele, Rosewood, White Water Qu Liu and other, novel shapes, the typical style, the full integration of values, art, utility as a whole; make your home more comfortable, more warm.

免漆套装门的基材为高密度防水纤维板，其表面经高温高压一次贴合而成的PVC饰面，无需油漆处理，表面平整光滑色彩亮丽，但永不褪色，款式200多种，具有良好的隔音、隔热、防潮、抗冲击、性能面层采用PVC板覆膜，木纹清晰、自然、逼真；色种有黑胡桃、红樱桃、铁桃木、柚木、沙比利、红木、白水曲柳等，新颖的造型，典型的风格，充分融合价值、艺术、实用为一体；使您的居室更舒适、更温馨。

And the deformation and surface roughness of the sheet after laser shocking are measured with the Taylor Hobson three-coordinate surface profile measuring machine.

用TaylorHobson三坐标表面轮廓测量机测量了冲击后板料的变形量以及表面的粗糙度。

Initially, assuming that the contact between cam and tappet is"dry contart", a dynamics model of Hertzin contact stiffness and impact damping is established. Next, with dynamic load on cam—tappet pair from the model, an analysis is made both to unsteady EHD oil film in cam—tappet pair under condition of full and partial lubrtication and to wear characteristics of cam profile. then, according to the fact that the lubrication in cam—tappet contact surface is EHD lubrication, taking the interaction between stiffness and damping of unsteady EHD oil film and rigidity of solid object contact into account, a dynamics equation of valve train relating to the dynamic effect of EHD oil film is built up and solved. Consequently, a further study is made on the dynamic characteristics of valve train under interaction of EHD oil film dynamic behavior and the problem of EHD lubrication in cam—tappet pair. Finally, the dynamic effect of full and partial EHD oil film is studied accordingly.

首先，通过对凸轮—挺杆接触为&干接触&的假设，建立了考虑赫兹&接触刚度&和冲击&阻尼&的配气机构动力学模型，用由此求得的凸轮—挺杆表面动载荷对凸轮—挺杆进行了全膜状态和部分膜状态非稳态弹流润滑分析，并研究了凸轮轮廓的磨损规律；然后，是在凸轮挺杆表面存在弹流动压油膜这一事实的基础上，相当于在动力学方程中考虑非稳态弹流油膜的&刚度&、&阻尼&和固体接触&刚度&的耦合作用，建立并求解了考虑弹流润滑行为动力学效应的配气机构的动力学方程，从而深入地研究了弹流润滑行为与动力学行为耦合作用下的配气机构动力学特征以及凸轮挺杆弹流润滑问题；作为前面工作的对应部分，考虑弹流油膜动力学效应的研究工作也同样分为全膜状态和部分膜状态进行。

To ensure the quality of coating, according to the different needs of each of the following can Derusting Sand-blasting, which is using compressed air pressure, worked with quartz sand or steel pellets impact of the component surface, the surface of the rusted steel, oil and other debris to clean up the color of a rust-removing method steel exposed metal.

为了保证涂装质量，根据不同需要可以分别用以下除锈工艺喷砂除锈，它是利用压缩空气的压力，连续不断地用石英砂或铁砂冲击钢构件的表面，把钢材表面的铁锈、油污等杂物清理干净，露出金属钢材本色的一种除锈方法。

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。