寿命

According to the viewpoint that the thinnest part of the deforming metal is usually the important and decisive part of the deforming force , the influence of the bridge size of the fash slot on the die forming and the deforming force is analyzed.

通过坯料在模锻型腔中的压挤成形过程，模拟开式模锻中飞边槽对金属充满型腔的作用，根据"变形金属最薄的部分常常是决定变形力的重要部分"这一观点，分析和探讨飞边槽桥部尺寸对模锻成形及变形力的影响，提出对高度较小、直径较大的齿轮以及复杂模锻件设计方法的改进，以提高该类锻件的模具寿命和生产率。

Tempered at 420℃, high hardness and toughness property can be maintained. It meets the requirement of multi-times impact strength with small energy and fatigue on operating duty. It has the higher endurance life property and so on..

经420℃回火，保持较高的强度和韧性，满足汽车板簧小能量多冲和疲劳载荷的服役状态，具有较高的疲劳寿命等使用性能。

Life of 5,000 hours or more, and through the U.S. FDA certification.

使用寿命达5000小时以上，并通过美国FDA认证。

This paper in view of present crude oil units running situation and the existence prominent question, in cooer with progress of production has carried out the corrosion mechanism research, the anticorrosion measure and the corrosion actually tests and analysis, the security and reliability analysis and the life forecast research, with the research of out and inner our country and the production actuality ,which provides a practical and feasible base for guaranteeing the equipment in the long-term and steady safe operation.

本文针对目前国内稠油加工常减压装置的生产运行现状和存在的突出问题，结合国内外研究工作和生产实际开展了稠油加工装置故障树分析、腐蚀机理、防腐措施、腐蚀实验、安全可靠性分析和寿命预测等方面的研究工作，为提高我国石油炼化装置的安全可靠性提供了理论基础和新的方法。

The PVC alloy that establishs litre of company own research and development exceeds filter film to have moving low pressure low, flux is big, filter precision is tall, run feebleminded waste time, fight contaminative ability low, service life grows cost of strong, production wait for an advantage, the product has applied in numerous waterworks, individual project is the most large-scale already achieved 300 thousand tons / day.

以超滤膜为核心技术的自来水净化工艺，被业内专家誉为"第三代城市饮水净化工艺"。立升公司自主研发的PVC合金超滤膜具有运行低压低、通量大、过滤精度高、运行低能耗、抗污染能力强、生产成本低、使用寿命长等优点，产品已经在众多自来水厂应用，单项工程最大规模已达到30万吨/天。内容来自www.ch-water.com

The wheel's felloe rigidity, natural frequency and the spoke bending stress was taken into consideration in this thesis to carry outthe optimization design of a 17 inch wheel, more reasonable structural parameter of the wheel was obtained.

建立了综合考虑车轮轮辋刚度、车轮模态和车轮弯曲疲劳寿命的影响的一个17英寸车轮结构优化设计模型，并在此基础上对该车轮进行了优化设计，得出了更加合理的车轮结构参数。

The practice for prolong ing service life of damaged furnace lining of high carbon ferrochrome are introduced, and tangible results are achieved.

叙述了高碳铬铁电炉炉衬的受损状况和侵蚀机理，对"假炉衬"的形成作了探讨，介绍了延长已被损坏的高碳铬铁电炉炉衬寿命的实践，并取得了良好的效果。

The damage state to furnace lining and erosion mechanism are expounded of high carbon ferrochromium .

叙述了高碳铬铁电炉炉衬的受损状况和侵蚀机理，对"假炉衬"的形成作了探讨，介绍了延长已被损坏的高碳铬铁电炉炉衬寿命的实践，并取得了良好的效果。

The main reasons of ladle lining damage and the factors affecting extra-low ferrochromium production with Perrin Process are analysed,and the measures to prolong ladle life are put forward.

分析了热兑法微碳铬铁生产中，反应包衬损坏的主要原因及其影响因素，提出了延长反应包寿命的措施。

The basic principle of the slagging method to separate ferrous and non-ferrous elements technology was discussed and analyzed.

理论研究和生产实践都表明：钢材的纯净度对其性能和使用寿命都具有很大的影响。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失