用锤头连续敲打金属表面的方法大大地延长了弹簧的使用寿命。
Great improvement has been brought about in the service life of springs by hot peening.
它提供了工具寿命和极为良好的表面光洁度。
It provides longer tool life and extremely good surface finish.
可是在塑性材料加工时，造成表面光洁度和刀具寿命低。
However, in case of ductile materials they cause poor surface finish and low tool life.
给出了高强钢焊趾表面裂纹在压弯组合应力下应力强度因子及其疲劳寿命计算式。
The formulae for calculating SIF and fatigue life of surface crack at weld toe of the high-strength steel under the combination stresses were given out.
给出高强钢焊趾表面裂纹在压弯组合应力下应力强度因子及其疲劳寿命计算式。
The formulae for calculating SIF and fatigue life of surface crack at weld toe of the high-strength steel under the combination stresses have been presented.
可以使用这些结果讨论一些薄片的少子寿命和表面复合速度。
Using these results, we discuss minority carrier lifetime and surface recombination velocity of some wafers.
此外，凸耳孔壁表面的加工缺陷也是降低凸耳疲劳寿命的一个重要因素。
In addition, another important factor of decreasing lives of lugs is machining defects in hole wall surfaces of lugs.
想要环氧地坪的使用寿命更加的长保养工作是不能少的，避免锋利的东西划伤地坪表面，定期进行养护、清洗等都是延长环氧地坪使用寿命的方法。
Long life more maintenance work is no less epoxy want to avoid sharp things scratch the floor surface, maintenance, cleaning, etc. are to extend the service life of the epoxy method regularly.
为了保持济南电动卷帘门的表面光泽和使用寿命，使用者一定要对其进行定期的清洁和除尘，对卷帘门的表面进行养护。
In order to maintain the surface gloss and service life of the electric rolling shutter door in Ji 'nan, the user must carry out regular cleaning and dust removal.
因此，对不锈钢表面必须进行定期的清洁保养，以保持其华丽的表面及延长使用寿命。
Therefore, the surface of stainless steel must be regularly cleaned and maintained in order to maintain its gorgeous surface and extend the service life.
直接利用激光快速成型的原型树脂模，结合陶瓷型精密铸造技术，制得了高精度、低表面粗糙度、高使用寿命的钢模具。
The steel dies with high dimensional accuracy, low surface roughness and long service life have been quickly produced by using prototyping resin molds as patterns of ceramic investment casting.
在此基础上，建议了一种通过两次不同电压扫描率的线性电压扫描来测定半导体的体产生寿命和表面产生速度的方法。
On the basis of this, a method of using twice sweep under different voltage sweep rates for determining both bulk generation lifetime and surface generation velocity is proposed.
并使用连续性方程，在考虑表面复合过程的情况下，提出了短二极管的少子寿命计算公式。
This paper calculates the expression between minority-carrier lifetime and switching time in short diode by analyzing the continuity equation when considering the surface recombination.
又算出了这五种形状角焊缝趾端部和焊肉中央处的表面裂纹疲劳断裂的寿命。
The fatigue life of the surface cracks of the weld toe and the central part of the welding bead are calculated.
硬化的阀座表面—阀瓣和阀体地阀座表面都经过表面硬化，最大限度延长使用寿命。
Hardened seating surfaces - both disc and body seating surfaces are hard faced for maximum service life.
对钢结构防腐技术的研究表明：涂装前表面处理质量对涂层寿命(即防腐蚀效果)的影响最大。
The research on anticorrosive technology indicates that the quality of surface treatment before application has the most important effects on coating life.
基于二维线性断裂力学理论，提出了一种表面淬火齿轮的弯曲疲劳寿命预测方法，并开发了相应的计算程序。
A method for predicting the bending fatigue life of a surface quenched gear is proposed based on two-dimensional linear fracture mechanics and a computer program is developed.
阴极表面，导致内阻增大、活性下降，使德国阳光蓄电池的使用寿命大大缩短。
Cathode surface, led to the decrease of the internal resistance increases, activity, make Germany sunshine greatly shorten the service life of battery.
然而超额钡仍然是发射电子的泉源，可以通过动态表面发射中心模型而与寿命中碱土金属下降统一起来。
But the fact that the excess bariums are responsible for electron emission may be reconciled with the deficiency of alkaline earth metals during life by the dynamical surface emission center model.
陶瓷轴承球的表面缺陷会严重降低球的强度和滚动接触疲劳寿命。
Surface defects in ceramic bearing balls may significantly affect ball strength and reduce rolling contact fatigue lifetime.
对失效试品作表面物理分析以便分析其失效机理，验证寿命加速试验是否正常。
Analysis of the physical characteristics of failure samples' contact surface verify the failure mechanism and accelerated lifetime testing.
针对齿轮的结构特点、设计原则、失效形式及各种破损实例，指出了当前提高齿轮表面疲劳寿命的最有效方法。
Due to structure peculiarity, design principle, failure form and worn examples, pointed a better method to delay fatigue life of gear surface.
着重分析影响精密分度装置寿命的接触表面压力，基本动载荷，温度系数等因素。
This article mainly analyses the factors that affect the precise indexer life, touching surface pressure, basic motion load and temperature factor for example.
提出齿轮的表面质量对其使用性能和寿命有着极为重要的影响，并详细论述了脉冲电化学机械齿轮光整工艺，及其加工后的齿轮的表面质量特性。
This paper points out that a gear's surface quality has important influence on its employment performance, and pulse-electrochemical mechanical finishing in gear machining is discussed in detail.
结果是表面更为平滑、接触应力降低和使用寿命延长。
The result is a smoother surface, lower contact stresses and an increase in service life.
试验结果表明，这种新型减振端铣刀不仅可以减少振动和噪声，而且还可以提高表面加工质量和刀具寿命。
The experimental results have shown that the modern vibration-free face-milling cutter can not only reduce vibration and noise but also increase the surface finish quality and tool life.
通过对切削试验结果的分析，认为PCD刀具后刀面刃磨质量直接影响切削表面质量，而对PC D刀具寿命的影响则相对较小。
By analyzing the results of the experiments, it is considered that flank surface quality of PCD cutting tool directly influences machined surface quality, but has few effects on cutting tool's life.
通过对切削试验结果的分析，认为PCD刀具后刀面刃磨质量直接影响切削表面质量，而对PC D刀具寿命的影响则相对较小。
By analyzing the results of the experiments, it is considered that flank surface quality of PCD cutting tool directly influences machined surface quality, but has few effects on cutting tool's life.
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