Reduce the friction and eliminate the need of lubricant.

It was the transitional period between the Middle Ages and modern times.

它是中世纪和现代之间的变迁过渡时期.

Until modern times, a trip was often a long and difficult adventure.

直到近代, 旅行还常常是个漫长而又艰难的历险.

We shall see how science progressed into modern times, often in spite of dispute and disbelief.

我们将会看到科学如何冲破一切怀疑和偏见而进入现代.

Unemployment is one of the major problems of modern times.

失业问题是现代的主要问题.

He was regarded as the most successful Chancellor of modern times.

他被认为是现代最成功的财政大臣。

The army's level of modernization in weapons has improved significantly.

武器装备现代化水平显著提高.

The chemical modification can enhance bioactivities of natural polysaccharides, and even give new bioactivities.

通过化学修饰可以显著提高多糖的生物活性, 甚至赋予新的生物活性.

A type casting adhesive based on PVA as mian material has been prepared by chemical modification.

以聚乙烯醇为主要原料,采用化学改性的方法成功制备了A型铸造粘合剂.

The advancement in the research of chitin and chitosan's chemical modification is generalized.

介绍了甲壳素和壳聚糖化学改性的研究进展.

The chemical modification techniques of natural phospholipids and characteristics of products were reviewed in this paper.

介绍了天然磷脂的化学改性方法及其改性物的性能特点.

Chemical modification is one of the most universal methods.

化学法改性是常用的方法.

The advances in physical and chemical modification methods of phospholipids were reviewed.

综述了国内外磷脂物理和化学改性方法研究的进展.

The characteristics and application of chemical modification are summarized.

综述了各种化学修饰方法的特点和应用.

After the surface modification, CNTs was mixed with polyester powder and then been extruded and chipped.

经表面改性后, 与聚酯粉体共混造粒、挤出.

The paper reviews the application of low-temperature plasma technology on the surface modification of biomaterials.

综述了低温等离子体技术在生物材料表面改性中的应用.

From the thermogravimetric analysis, the oxidation of powders after surface modification was reduced.

而热分析的结果发现, 改质镍及钯银粉的氧化量较一般未改质粉为低.

The combustion synthesizing-high temperature synthesizing is one of the active techniques for surface modification.

燃烧合成涂层技术是一种新兴的表面改性和表面涂层技术.

Laser cladding is an advanced surface modification technique, having high potential in manufacturing wear-resistant coatings.

激光熔覆技术是一种先进的表面改性技术, 在制造 耐磨 涂层方面具有广阔的前景.

Moreover, appraisal ftmctions of powder surface modification effect are introduced in brief.

另外, 简要介绍了粉体表面改性效果的评价方法.

Nickel powder surface modification is the important part before being applicated.

片状镍粉的表面改性是应用前的重要环节.