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The present research progress of biological tribology and disabled mechanism and pronging life measure of manual joint, inner fastness, growing artificial tooth and manual heart valve are reviewed, and some future tasks for biological tribology are discussed also on these basis.

以人工关节、内固定、种植义齿和人工心脏瓣膜的失效机理和延寿措施为例，综述了生物摩擦学的研究现状，在此基础上，提出该领域值得重点研究的几个问题。

Radiographs present several attractive features for the assessment and monitoring of patients with rheumatoid arthritis.

X 线片在评估和监控类风湿性关节炎患者病情上有几个优点。

Consequently,the present curriculum system for electric automation spe- cialty should be reintegrated and restructured.

在中国高等职业教育改革中，制订面向21世纪的教育及培训体系，是党中央、国务院及

The present invention is suitable for aluminum casting requiring high antiwear property and Al-Si alloy with smelted waste material.

本发明适用于要求耐磨性高的铝铸件，以及熔化大量废、旧零件以及切屑的铝硅合金。

Therefore if there is present a holy life and catholic doctrine, this suffices for the church militant.

因此，如果有一个神圣的生命和天主教教义，这足以为教会激进分子。

Twelve big series of products taking form at present already with"Yongfu" for the brand have been formed, and main products include cutting machine ,grooving machine, dinking machine, bending machine, bar straightener , battering ram, frog rammer, trowelling machine and concrete mixer, construction winch lighting vehicle.

目前已形成以&永福&为品牌的十一大系列产品，主要产品有：切割机、切缝机、切断机、弯曲机、调直机、冲击夯、蛙式夯、抹光机、圆锯机、卷扬机、搅拌机、等系列产品。

Twelve big series of products taking form at present already with"Chengfu" for the brand have been formed, and main products include cutting machine ,grooving machine, dinking machine, bending machine, bar straightener , battering ram, frog rammer, trowelling machine and concrete mixer, construction winch lighting vehicle.

目前已形成以&成福&为品牌二十八大系列产品，主要产品有：切割机、切断机、弯曲机、弯箍机、调直机、冲击夯、蛙式夯、平板夯、木工平刨、木工压刨、圆锯机、搅拌机、切缝机、刻纹机、切桩机、切槽机、切块机、铣刨机、清灰机、抹光机、灯车、路面吹风机、钢筋剥肋滚丝机、整平机、风镐、小型压路机、振动器振动棒、电焊机等系列产品

At the present day, computer is becoming universalizing, and technology of Expert System , Artificial Intelligent and-other science is developing and coming to maturity, which provide well material foundation and technological support for solving problem of collision prevention.

当前，计算机在各类船舶中的普及与应用，专家系统技术及人工智能领域内的其它技术的发展、成熟，为解决避碰这一难题提供了良好的物质基础与技术支持。

The present study is expected to make clear of conceptions and to give directions for further relevant researches.

本文对今后的相关研究可起澄清概念和指明方向的作用。

--- The present invention relates to a heating and cooling system for structures such as residential dwellings.

摘要---本发明涉及到一个加热和冷却系统的结构，如住宅的住房。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。