冲击面

The abrasiveness of hot deformed low chromium semi-steel was studied through the impact abrasion test.

通过冲击磨损试验，测试了变形低铬半钢耐磨性，并对其磨损面特征进行了分析。

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。

By applying the difference arithmetic to solve the differential vibration model of the single-degree-of-freedom,the acceleration responses of the vibrated bevel wheel was calculated.The bevel wheel contact fault was simulated by taking it as the impulsion loading in local point.By using techniques of wavelet de-noising and demodulated resonance,gear contact character information was picked up successfully.

从齿轮的单自由度振动模型出发，运用差分算法对模型进行求解，得到斜齿轮的振动加速度响应，将齿面接触型故障等效为在局部点突加一个冲击载荷，对齿轮齿面接触型故障进行了仿真，利用小波降噪和共振解调技术分别对仿真的染噪振动加速度信号进行处理，成功地提取了轮齿接触故障的信息。

According to the quantitative analysis, the critical time to stop or run back the wheel and shaft when the driving rotor generating an impulse during strike of the return high-pressure gas is calculated...

介绍了我厂关键设备氧化铝沸腾焙烧炉罗茨鼓风机的功能，及自1997年11月投产以来先后发生四次事故的情况，重点分析了由于高压气体回流冲击而使同步齿轮与轴配合面产生相对滑移的可能，通过定量分析计算高压气体回流冲击时对主动转子产生冲量使其停止或反转的临界时间，同时提出了预防措施。

Western painting with face composition, worship the visual effect and color power.

西方绘画以面造型，推崇色彩的视觉效果和冲击力度。

The model successfully describes the breakdown characteristics of SF〓 as a function of impulse wavefront according to the predischarge process obtained by a current probe. It also shows promise to be applicable to the flashover of spacers in SF〓 and the discharge in SF〓 mixture.

结合由电流探头测得的冲击电压下SF〓气体的预放电过程，该模型成功地解释了SF〓气体击穿特性随冲击电压波头时间而变化的规律，而且该模型也适用于SF〓气体中绝缘子沿面闪络和SF〓混合气体放电。

A water model for simulation of 1050 mm mold is established to investigate the effects of SEN structure, casting speed, immersion depth and other parameters on the fluctuation of the liquid level in the mold, the impact depth of the steel stream and entrapping of the flux, and compare the influence of different structure parameters and operating parameters on the flowing field in the mold in order to find out the best suitable compromise between the structure parameters and the operating parameters and then...

针对 10 5 0mm× 15 0mm断面的结晶器，建立了水模型，研究浸入式水口结构、拉速、浸入深度等工艺操作参数对结晶器液面波动、流股冲击深度及结晶器钢液面保护渣卷入情况的影响，比较不同水口结构参数及操做参数对结晶器内流场的影响，从而找出结构参数与工艺参数间配合最佳的工况，为水口设计提供理论依据，并经优化的水口在实际中应用，使安钢第二炼钢厂的板坯退废率由 1.5 0 %降为0 。6 %。

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。

While a ball mill is working, balls in the mill are lifted, and then are thrown away with a certain velocity to collide raw material. But at the same time, balls and underboarding are also got collision which may make balls and underboarding fracture. Considering the tough lubrication condition and dust and prills have easy access to meshing zone of gears, the heavy abrasion on gear surface often appears in the upstage gear of open-gear transmission of ball mill.

当球磨机正常运转时，磨球被提升到一定高度后抛落，以一定的速度对物料产生冲击而粉碎物料，同时也对磨球和衬板自身产生冲击，这可能造成磨球和衬板的破球磨机的末级开式齿轮传动，由于润滑条件差，粉尘、金属颗粒容易进入啮合区，齿面常常出现严重磨损，导致齿廓形状发生变化，最后因齿厚磨损过多而折断。

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。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了