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冲击表面

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This research applied austempering heat treatment to obtain various microstructures in the matrix of ductile iron and studied their erosion wear behavior. The effects of different impact angle and microstructure on erosion wear rate and morphology wase investigated. Mechanical property evaluation together with SEM analysis was also carried out to correlate the wear behavior observed.

本研究系以球墨铸铁进行沃斯回火热处理,获得不同基地组织的试片,再利用冲蚀磨耗实验来进行各种角度的冲蚀磨耗,配合机械性质测试及扫描式电子显微镜来观察冲蚀表面,探讨沃斯回火热处理对球墨铸铁不同冲蚀磨耗型态与冲击角度的影响。

This news was a significant blow to the semblance of improvement in general sentiment regarding the credit crisis.

这一消息对当前表面有所改善的信贷危机而言,是一个重大的冲击。

When solid solution occurs at 1 030-1 230 ℃,the room temperature impact value of steel is increased with solution temperature,and the depth of decarburized layer and grain size are increased.

在1030-1230 ℃固溶时,试验钢的室温冲击功随固溶温度的升高而增加,表面脱碳层深度和晶粒尺寸则随之增大。

N Results From Failure: Shattered femurs from impacting with water up to severe bodily harm from impacting with any solid surface.

结果:从失败和水从冲击破碎股骨到严重的人身伤害影响任何固体的表面。

A recent study suggests, however, that permafrost ices below the surface of Mars may have altered the effects of impact on it.

但是,近来的研究表明,火星土层表面下的永久冻结冰可能改变了这种冲击效应。

In this paper, by using theoretical analysis and experiment, the effect of the surface roughness of the laser shock peened metals on the dispersion of laser-generated surface acoustic waves is studied.

本文从理论和实验方面研究了激光冲击硬化材料表面粗糙度对激光声表面波色散的影响。

We find that the proportion of the contribution of the three factors on the fatigue strength improvement of the peened joints depends on the base metal static strength.

结果表明:超声冲击处理提高焊接接头疲劳强度的硬化,改善焊趾几何外形和在焊趾区形成表面压应力三者贡献的大小,与被处理焊接接头的母材静强度有一定的相关性。

Laser-generated surface acoustic waves are excited by Nd:YAG and the signals are detected by PVDF transducer. The paper discusses laser-generated surface acoustic waves in the smooth and non-laser shock peened medium by using the experimental system.

分别对不同激光冲击硬化次数下样品表面抛光前后的激光声表面波信号进行探测,通过对探测到的激光声表面波信号进行频谱分析,利用相位谱法得到激光声表面波的相速度色散曲线。

The results show that the instrument can reach the demand of ultrasonic peening grain refinement.

试验结果表明该设备可以满足超声表面晶粒细化冲击的要求。

Water jet machining is a special machining method using high pressure high speed water(pure water or water with additives) to impact the wor kpiece with the action of suspended abrasive in the water for cutting, pouching, crushing or surface material removal.

水射流加工是一项特种加工方法,采用高压高速水冲击工件,在水中悬浮磨粒的作用下,进行切割、穿孔、破碎或表面材料去除。

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I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。

Ah may dee:You are chinese living in a democratic country.

你是居住在民主国家的中国人吧。