冲击面

As tunneling and cutting equipment of a shield machine ,the cutterhead can excavate stratum,stabilize excavation face,mix soil slag, etc.

刀盘是机械化盾构机的掘削机构，具有开挖地层、稳定开挖面、搅拌渣土等功能，并承受大扭矩、大推力和冲击载荷的作用，其工作状况非常恶劣。

Disk ogive ; water pile ; oblique water-entry ; impact load ; simulation

平头尖拱体；液面隆起；斜入水；冲击载荷；仿真

The same situation is on the problem of ectogenesis after man's death, which also face the same problems too. it will bring out the assault to the existing social family's structure, and the materialization of child, the violation of the individual's right to make his own decision, and the violation of " human nature dignity " principle, if the law allow to ectogensis after man's death .

同样的情形，在取后进人工生殖之问题探讨上，也面同样的问题，开放后人工生殖，也会对现有的社会家庭结构产生冲击，亦有是否为纯粹满足大人的欲望而将小孩子物化的隐忧，及进后人工生殖得过程中是否尊重个人「自主决定权」之使，有无违背「人性尊严」原则，，，等等问题。

The analysis of the flow field and the contours of temperature of the staged entrained flow coal gasifier show that the engulfment and the counter flow aroused by the secondary injection strengthen the mixing process in the staged gasifier. This had a positive effect on the improvement of coal conversion rate.

通过对分级气化炉流场特性和温度等值面特征的分析，发现分级气化炉中由于二次对冲给氧射流的引入，造成了二次卷吸效应以及冲击射流效应，加强了炉内混合过程，有利于碳转化率的进一步提高。

The paper introduces some researches, such as a new method to calculate the added mass for the seismic analysis of the fuel assembly in fast breeder reactor, simulation on the vortex shedding of double heat exchange tubes in a steam generator, simulation on the vortex shedding caused by the cross -flow over plates in a fuel assembly of an advanced reactor, the research on the impacting phenomenon of the free-surface on the vessel head in a storage tank as the main vessel of the China Experimental Fast Reactor shaken by the earthquake, and the researches on the solution of the liquid sloshing by moving particle semi-implicit and the scattering phenomenon caused by sloshing, and so on.

本文介绍华北电力大学在该方面的一些研究进展，例如，快堆燃料组件抗震分析新的流体附加质量计算方法研究；蒸汽发生器换热管双管漩涡脱落的数值模拟；一个先进堆燃料组件平行板上流动引起的漩涡脱落数值模拟；由地震引起的自由表面对快堆主容器冲击现象的研究；移动粒子法求解液面晃动及晃动引起离散现象的研究等。

Additionally, the products have excellent physical and mechanical properties after being overlaid with thin fiberboard or plywood.

然而该产品一经覆面，却具有优良的物理、力学性能和抗冲击性能。

The experimental results of erosion under different rib geometry and ribbing form are in good agreement with computational ones.

首次对设置不同形状、不同排列方式抗磨肋条的壁面进行颗粒两相流的冲击磨损试验，证实了数值计算与理论分析所获结果的准确性。

This machine use the dry and clean constringent air as energy、through airflow high-speed eject to make the grinder indoor be a grinding, classification round surface and be a pressure difference indoor then raw materials are automatically inhaled the indoor of grinder with the help of ultrasonic airflow what 4-16 spray head eject (producing the impacted energy E=1/2mv2), raw materials rotate at a high speed on the classification round surface and bring the litter store and make the raw materials granules hit and rub together to attain the supper fine materials.

本机组以干燥洁净的压缩空气为动力源，通过气流高速喷射，使粉碎室内形成一个粉碎、分级圆面，并在粉碎室内形成压力差，则物料自动吸入粉碎室，在4到16个喷头所喷出的超音速气流作用下（产生冲击能E=1/2mv2），物料在分级圆面上作高速通常在2-3马赫内，对于硬度低、脆性物料工作压力可低到0.6-0.7MPa。

For different materials,the macrostructure of damage sites are dissimilar.The microstructure of damage sites were indicated as follows:the damages of granite and marble after being particle impacted were made up of damage of cleavage surfaces and crystal faces and spread of cracks along phase interface and pore space,which is harmful to mechanical property;while the damages of concrete and mortar were made up of cracks of transition zone and aggregates and plastic flow of C-S-H,which may cause more hidden danger to perma nence than to mechanical properties.

对四种材料损伤形貌的微观分析表明：花岗岩、大理石受颗粒冲击后产生的损伤主要为拉应力导致的解理面、晶面的破坏以及裂纹沿相界面和孔隙的扩展，对其力学性能有较大的危害；混凝土和砂浆的损伤由过渡区开裂、骨料破裂和C-S-H的塑性滑移共同构成，对耐久性造成的隐患远大于对力学性能的影响。

A kind of high speed steel roll collar with high wear-resistance has been developed usingcentrifugal casting technique, to replace common alloy cast iron rolf collar with low wear-resistance and hard alloy roll collar with high price.

常用合金铸铁辊环耐磨性低，而硬质合金辊环成本高，采用离心铸造方法，开发了耐磨性能优良的高速钢辊环，高速钢辊环的硬度达63～65HRC，辊面硬度差小于2HRC，冲击韧性大于16J/cm~2。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。