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The mechanical properties of coal filled polymer composites The mechanical properties of coal/PP composites were investigated, and the effects of coal rank, particle size, surface modification of coupling and alkylation were discussed. The results show that the anthracite and bituminous coal all can be used as filler of plastic after pretreatment of part devolatilization and surface modification; The modulus of composites increase with the content of coal filler; The coupling agent is of no effect for reinforcing the coal/PP composites, except that there are new oxygenous function group forming on the surface in the process of pulverizing; The F-C alkylation reinforce coal (under 10μm)/PP composites obviously.

4煤填充高分子复合材料力学性能超细煤粉填充聚丙烯复合材料力学性能的研究结果表明，烟煤和无烟煤经过脱除部分挥发分的预处理后，都可用于与塑料共混制备复合材料；偶联剂改性对低变质程度烟煤/聚丙烯复合材料的力学性能基本不起改善作用，而对于经气流超细粉碎后的小粒径高变质程度烟煤及无烟煤则有一定的增强作用；烷基化改性在煤表面接枝了烷基，使平均粒径小于10μm的煤/聚丙烯复合材料拉伸屈服强度普遍提高，煤填充高分子复合材料可在较高含煤量情况下维持良好的力学性能。

Metacognition plays an important role in many different recognitive activities, especially during teaching in the classroom.

元认知在许多不同的认知活动中都起着重要作用，在课堂教学中，元认知的作用尤显重要。

Since the establishment of the system of board of supervisors of company in Company Law in China, it has been playing an active role in the standardized operation of company in China. However, a lot of disadvantages have been exposed at the same time. Most of the board of supervisors of company become unfunctional and hinder the further development of the company.

因此，各国均在公司法中以不同的形式确立其地位和作用，我国自《公司法》确立了公司监事会制度以来，在我国的公司规范化运作起了一定的作用，但同时暴露出不少漏洞，大部分公司的监事会成为一种摆设，阻碍了公司的进一步发展。

We, of course, know that with time, culture and socialisation do play a role in determining a male brain or female brain. But these studies strongly suggest that biology also partly determines this.

当然，我们知道假以时日，文化和社会化确实在决定男性大脑或女性大脑方面起一定的作用，但是这些研究都强烈表明生物因素在一定程度上也发挥作用。

As they evolved, mammals, reptiles, birds and most fish lost the ability. Today, only sharks and a few other marine species, such as sturgeons and lampreys, can sense electricity.

研究人员还表示，这种可以探测电流的能力在有水的环境下具有非常重要的作用，但是在陆地上，它就不起什么作用了。

Root border cells are recently defined alive population sloughed from root tips and loosely adhered in the water soluble mucilage, and the root tip is just the target of Al toxicity, thus it was guessed that border cells might function crucially in the response to Al toxicity.

根边缘细胞是从根冠游离并聚集在根尖周围的一群特殊细胞，铝毒的作用部位正是根尖，因此推测边缘细胞在铝毒反应中起着重要作用。

Forest is the principal part of the land ecosystem which does not only have the important action for maintenance of the area entironment, but also is one of important conditioners of carbon dioxide in the atmosphere. So it is very important to study the action of forest for adjusting the global carbon balance and vindicating the global climate and so on.

森林是陆地生态系统的主体，它不仅在维护区域生态环境上起着重要作用，而且是大气CO_2的重要调节者之一，因此研究森林生态系统在调节全球碳平衡以及维护全球气候等方面的作用具有重要的意义。

By comparing the pictures captured during cutting, we can see that chip breaker plays its role most in the planing cutting direction. The cut fibers are break by chip break before hand, so that digging out reduces.

从切削过程中采集的图片及切屑状态，并对照试验一的图片，可以看出在纵向切削时断屑器所起的作用最为明显，切屑在断屑器的作用下被提前折断，加工试件表面的挖切现象也比试验一中有所减少。

These results suggested that adrenal corticoids play an important role in maintaining sympathetic tone on the central cardiovascular regulation and basal BP, and that the enhancement of cardiovascular activities produced by adrenal corticoids may be one of the important causes in the incidence of stress-induced hypertension.

提示肾上腺皮质激素在维持中枢性心血管交感紧张性和正常血压中起正性调节作用，并提示有可能肾上腺皮质激素在rVLM心血管活动的加强作用为应激致高血压发病机制中的重要环节之一。

The results show that in the sintering process of clinker more La and Ce are distributed in the silicate phase, which form into solid solution with it ; The dopping effects of La and Ce induce the aberrance of stress field of diffusive medium, which decrease the activation energy of particles diffusing, and accelerate particles diffusing during the solid state reaction.

结果表明，稀土元素La和Y在熟料煅烧过程中更多地分布在硅酸盐相中形成固溶体；稀土离子的掺杂作用，导致扩散介质中应力场的畸变，降低了质点的扩散活化能，从而对固相反应中的质点扩散起促进作用。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新