可改变的

According to the investigate result of national 19areas,cardiovascular diseases have become the primacy of death cause,in the analysis of death cause of cardiovascular diseases,the factors of life style and mental behavior have excessed traditional biological factor,and have become primacy of death cause.Mentaland social factor are main inducement of cardiovascular diseases.

心血管疾病和其他心身疾病一样，存在着明显的心理障碍，抑郁症状明显，引起抑郁的原因很多，如工作岗位的变更、事业上的失落、生活环境改变、丧偶、婚姻家庭问题、子女儿孙问题等及慢性疾病的折磨都可产生反应性抑郁，导致生活满意度低下。

For the first time, we found that the EHFV propagated in HUVEC has a potentiating stimulation to ET-1 and PGI〓 secretion , which may be respensible for the increased plasma ET -1 level and PGI〓 concentration in patients with EHF during the early phase of the disease.

我们的研究结果提示，HUVEC对EHFV敏感，EHFV感染未引起HUVEC的细胞病变，但可抑制HUVEC的增殖，这有可能改变EC的基因调节，或低调，如Ⅷ R：Ag合成障碍，引起止血功能异常；或高调，如主要组织相容性复合物Ⅱ型抗原、干扰素β和内皮细胞白细胞粘附因子的表达增加，增强EC的炎症反应。

Without romanticizing the machine, it is clear that computers uniquely change the potential for equipping today's citizens for unprecedented tasks of the future.

不必用浪漫主义的手法来形容计算机，我们可清楚看到，它是独一无二的改变今天公民的潜力，使他们能承担未来的史无前例的任务。

Considering the influence of other loads and uncertain factors, the follows should be taken into account if the bridge erecting mode is continue to be used.(1) Strengthen beams of steel structure with orbits, especially second half part of the Bere Beam;(2) Altering the space between crossties and increasing the support in the mid of station weight beam both can enlarge the decentralization function of the load carrying on the trunk beam, but usually the latter way is more effective. When the latter way is chosen, the stiffness of the support should be diminished correspondingly. Furthermore, adjusting the height of the support would help a lot in dispersing load.

考虑到其它载荷的影响以及不可预测因素，如继续使用该类架桥方式，应做以下考虑：(1)增加钢架梁与轨道的支撑，特别是在贝雷梁的后半部分；(2)增大荷载作用在箱梁上的分散系数，可适当改变枕木间距，亦可在配重梁的中部增加支撑，后者效果会更有效，当考虑增加支撑时，同时要降低支撑的刚度，支撑如能简单地调整高度，将会对分散载荷起到非常大的帮助。

The lowest rating boiler efficiency, the smallest heating area and the disposition of blast blower and inducing fan in energy conservation design standard for new heating residential buildings are analyzed and the relative suggestions are advanced.

本文认为为达到按户计量的良好效果，供暖系统应在设计时考虑到室内温度的可调性，因此应改变传统的没有跨越管的单管顺流式系统，提出了适应既有和新建住宅建筑按户计量的系统形式。

High load high temperature resistant, good performance, and braking stability, mud in winter and bad conditions, the disc brake driving drum brake easier than in a relatively short period of time to stop the car Can collapse in vehicle principls shrinkage occurs when the frontal impact crushing forward, to ensure the shrinkage crew chest from harm CAE simulation technology for application of the original design, the change process, CAE analysis method and combining with engineering design, analysis and design, CAE and the integration of CAD most of the vehicle in the design phase problems can be resolved through simulation, can be in concept design phase is accurately forecast and control components and vehicle performance and reliability, thus in the development initial can make the future product performance and structure index guaranteed.

高负载时耐高温性能好，制动效果稳定，而且不怕泥水侵袭，在冬季和恶劣路况下行车，盘式制动比鼓式制动更容易在较短的时间内令车停下可溃缩式转向柱会在车辆发生正面碰撞的时候向前溃缩，以保证乘员胸部免受伤害 CAE仿真技术进行的全面应用，改变了原来的设计方法和流程，CAE分析和工程设计紧密结合，实现了分析与设计同步、CAE与CAD的一体化使车辆的大多数问题都可以在设计阶段通过仿真得到解决，可以在概念设计阶段就精确地预测和控制零部件乃至整车的性能和结构可靠性，从而在开发初期就能使未来产品性能和结构指标得到保证。

Rotary valve capacity is about the same size straight trip valve 2 ~ 3 times, spin valve can be used to improve the blending amount of the feed pipe without changing the size, can greatly reduce costs, for this reason, part of the rotary valve has been designed to replace the cut-off valve flange face flange form of connectivity and is equipped with connecting bolts, such valves even better than the cut-off valve replaced them cheaper.

旋转阀的容量大约是相同尺寸的直行程阀的2～3倍，旋转阀能够用于提高掺合量而不改变进料管线的大小，可以极大地降低成本，基于这个原因，部分旋转阀已经设计成可代替截止阀的法兰面对法兰面的连接形式，并配有连接螺栓，这类阀甚至比他们所替代的截止阀还便宜。

The results showed:(1)Nitrogen addition changed the soil physical and chemical properties, enhancing the content of NO3—- N available resources in the soil, increasing the plants height and cover, reducing the vegetation light penetration. With increasing of N addition, both the species richness and the diversity decrease sharply (P 0.001).(2)N addition increased the aboveground biomass significantly (P 0.05). With increasing of N addition, the aboveground biomass increased first then decreased, and the grasses biomass increased while the forbs and legumes biomass decreased.(3)There was a significant linear positive relationship between species richness and vegetation light penetration (P 0.05), and also between aboveground biomass and soil NO3—- N content (P 0.05). The relationship between aboveground biomass and species richness was negative upon enhanced N supply.

结果表明：（1）氮素添加提高了土壤中NO3—- N等可利用资源的含量，增加了植物群落植被的盖度，减小了植被的透光率，随着施氮量的增加群落中物种丰富度显著降低（P 0.001）；（2）氮素添加显著改变了植物群落地上生产力（P 0.05），随着施氮量的增加地上生产力呈现先增加后降低的变化趋势，各功能群中禾草生物量显著增加，而杂草和豆科生物量随施氮量增加逐渐减少；（3）物种多样性与植被透光率呈线性正相关（P 0.05）；地上生产力与土壤NO3—- N含量呈线性正相关（P 0.05）；随着施氮量的增加物种丰富度与生产力之间呈负相关关系。

Findings in this study would suggest that while the present Cable TV systems are facing some structural changes, the government must have some foresights.

本文的研究建议为，目前有线电视系统产业正在进行结构性改变，政府要有前瞻性，可参考美国、欧盟、、亚太等国家的数位汇流后的传播内容监理政策，尽速制定一套完整的政策配套措施，让相关业者动起来，不要只有口号，而无实际作为，只有消极的管制措施。

Findings in this study would suggest that while the present Cable TV systems are facing some structural changes, the government must have some foresights. In the time of digital convergence, audiovisual media content regulations in the United States, European Union, and Asia Pacific and so on can be taken into consideration. It should pace up the stipulation of a set of overall policy complementary procedure to stimulate relevant industry.

本文的研究建议为，目前有线电视系统产业正在进行结构性改变，政府要有前瞻性，可参考美国、欧盟、、亚太等国家的数位汇流后的传播内容监理政策，尽速制定一套完整的政策配套措施，让相关业者动起来，不要只有口号，而无实际作为，只有消极的管制措施。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。