冲击表面

Laser shock peening is a well-known method for extending the fatigue life of metal components by introducing near-surface compressive residual stress.

激光冲击硬化通过在材料的近表面产生残余压应力来提高材料的表面硬度和抗疲劳寿命。

Besides, surface predischarge phenomena were studied by taking Lichtenberg figures on the bushing and a glass plate model simulating the electrode arrangement of bushings under impulse voltages.

此外，用彩色及黑白胶片电花图技术研究了套管和平板玻璃放电模型在正、负极性冲击电压下的表面预放电现象，研究了正极性表面先导的传播长度与平板玻璃厚度及相对湿度等影响因素的关系。

As a new surface peening method, high pressure waterjet peening was used to improve the fatigue life of treated components by changing the surface . Although there was just 4-5 years to this day , because of the better effects and lower cost and easier to carry out robotization and cutting/peening/ forming as a kind of multiplicity treatments , some researches had been started overseas .

高压水冲击强化是一种新的表面强化方法，通过改善零件的表面状态而提高疲劳寿命，虽然该项技术从提出至今仅短短4-5年时间，但由于与传统喷丸相比具有强化效果好、成本低、便于实现自动化和切割／强化／成形复合加工等诸多优点，国外有关研究机构已经对其开展了一系列研究。

In current study, the laser shock processing technique of high energy and short pulse duration is adopted. The substructural transformation characteristics and mechanisms of 2Cr17Mn15Ni2N austenitic stainless steel, subjected to ultra-high strain-rate and impact stress in excess of dynamic yield strength of the target, are investigated by scanning electron microscope, X-ray diffraction and transmission electron microscope technology.

采用高能短脉宽激光冲击加载技术，利用扫描电子显微镜，X射线衍射和透射电子显微镜等手段，研究了在激光诱导的超高应变率和高于材料动态屈服强度冲击加载条件下，2Cr17Mn15Ni2N奥氏体不锈钢表面亚结构的转变特征和机制。

When the starship launches the anchor chain, the incomparably sharp state-of-art anchor hook, the hook lives this planetoid surface that moment, because is under the exceptionally violent impact suddenly and tows entrains the strength, all tight hooks live the planetoid surface extremely consistently the starship all, the rearward suspends rapidly; But these have not hung for a while or hangs the jail the starship, then instantaneous on is flung the planetoid the behind, the twinkling of an eye vanishes in the thick thick mist which the planetoid sends out, has lost the trace, looked like they only could alone return from cruise, because they this time the flight vehicle speed radically was unable to overtake once more, this raided rapidly to Earth's planetoid.

当星际飞行器发射的锚链，无比锐利的尖端锚钩，钩住这颗小行星表面的那一刻，由于突然受到异常猛烈的冲击和拖拽力，所有紧紧钩住小行星表面的星际飞行器都极为一致的，急速向后方摆去；而那些一时没有挂住或挂牢的星际飞行器，则瞬间就被甩到小行星的背后，一眨眼就消失在小行星所散发出的浓浓雾气中，迷失了影踪，看来他们只能独自返航了，因为他们此时飞行器的速度根本无法再次追上，这颗急速袭向地球的小行星。

When locally scathed, the bearings would bump the other parts periodically with the result that the seasonal impulses come into being.

当轴承某一元件表面出现局部损伤时，在受载运行过程中要周期性地撞击与之相互作用的其他元件表面而产生周期性的冲击脉冲力。

Friction decreases when the surface becomes softer. But it increases as the surface becomes harder appears ahead of time relatively. Barefoot land hip joint angle displacement and angular velocities is it wear shoes land the hip joint to greater than or not in shoes of putting on. Total landing time, a stream of straight skin and sura skin muscle shrink, act and resist the skin group short of moneyly, and the length is shortenned when the skin muscle shrank before a stream of bicepses and shin bones, it is the function skin group.

髋关节、膝关节与踝关节之角度、角位移、最大角速度、垂直分力第一峰值与第二峰值、50ms被动冲量都会随著著地表面材质的软化而变小；而著地在硬地表面，冲击的力量会随著增加，相对地第一峰值时间会随著提早出现，在穿鞋与否和著地材质交互作用下，赤足著地髋关节角位移与角速度都大於穿鞋著地髋关节。

The made grinding ball has needle like bainte as main component, small amount of martensite and residual austenite, average surface hardness of HRC 56-58, average volume hardness of HRC 50-55, impact toughness of 16-20 J/sq cm and excellent comprehensive mechanical performance.

所制备的磨球组织主要为针状贝氏体及少量马氏体和残余奥氏体，磨球的表面平均硬度HRC56～58，平均体积硬度HRC50～55，冲击韧性α k 值在16～20J/cm 2 ，落球次数＞20000次，具有非常好的综合力学性能、耐磨性和冲击疲劳寿命。

Based on observation of the shape in the shock zone, the phenomenon on chip formation due to shock of ultra-high speed grinding is found. After analyzing micro scratch on the marble surface by artificial diamond and CBN, the results show that the effect of ductile regime grinding of fragile material in ultra-high speed grinding can be attained.

通过对冲击区形貌的观察，发现了超高速冲击成屑现象；通过对金刚石和CBN在大理石表面所留下的细微划痕的分析，得出了脆性材料在超高速磨削条件下可以获得延性域磨削效果的结论。

To improve the fatigue strength of TC4, Nd: Glass pulse laser was used to shock the surface of TC4. X-ray stress analyzer was used to test the residual stress of the shocked area, and calculation was done by finite element software ABAQUS.

为提高钛合金的疲劳强度，采用Nd： Glass强脉冲激光对TC4钛合金表面进行冲击强化处理，采用X射线应力仪对冲击区的残余应力场进行测试，并采用ABAQUS有限元仿真软件对其残余应力场进行分析计算。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。