不断的变化

Is it true that, with the elaborate apparatus of modern production, economic decisions are required only at long intervals, as when a new factory is to be erected or a new process to be introduced?

由于有了精心制作的现代生产设备，只是在需要建立新工厂和引进新的加工程序时才需要经济决策；一旦一个工厂建立起来，剩下的事情在或多或少的程度上都是机械性的，是由这个工厂的特点决定了，很少留下变动的余地以适应不断变化的环境。

During design of pile raft foundation, reacting force raft board bottom is very important,and it not only suffers the stiffness influence of upper structure,and the degree of solidifying that still suffers the constantly change of base soil along with the increase of time reaches and the influence that time efficiency of base stiffness.

桩 -筏基础设计时，筏板底部的地基反力的确定是十分关键的，它不仅受到上部结构的刚度影响，还受到地基土的固结度随着时间的增长而不断变化及地基刚度的时效性等的影响。设计时其计算模型的建立又和桩-筏的刚度有关。根据地基土在桩-筏基础的作用下的实际受力状况，结合工程实例，提出桩-筏基础设计时简化计算的 3种模型及 3种型使用时的注意事项

He life space of family caregivers turns out to be in covariation with that of people with dementia. In order to take control of caregiving and living requirements, most family caregiviers would modify the life space of the elderly carereceiver. In this modification process the caregiver's own life space also undergoes changes to different extents.

属和失智老人的生活空间属於高度相关的共变关系；大多数家属会调整老人的生活空间，好让自己得以掌握大部份的基本生活及照顾事务，少部份家属由於两人关系较难著力改变老人的生活空间，因而转以调整自己生活空间的方式，或是引入社会邻里等资源的协助，来因应不断变化的照顾需求。

One of the strongest motives that lead men to art and science is escape from everyday life with its painful crudity and hopeless dreariness, from the fetters of one's own ever-shifting desires. A finely tempered nature longs to escape from the personal life into the world of objective perception and thought.

支持我们追寻艺术和科学的动力就是：从无聊的令人窒息的日常生活中逃脱，从我们自身的不断变化的欲望的镣铐中逃脱；一个个性优秀的人渴望从个人生活中逃脱，从而融入到客观看法和思考的世界中去。

It was rev ealed that:cuprite,malachite and tenorite are the three main kinds of copper-bea ring minerals which would be supersaturated when Cu concentration in the solutio n is high enough(higher than 0.0016 mol/L,0.0079 mol/L separately) under the stu dy conditions.Copper exists in the solution mainly as the species of CuCO3 ,Cu2+ and CuOH+.The corresponding content of CuCO3 would be decrea sed following the deposition of the copper-bearing minerals,nevertheless,Cu2 + and CuOH+ would be increased.

模拟结果表明，在土壤中常见的E h和pH及研究区的年平均温度条件下，溶液中铜离子的含量达到一定的浓度时，可以生成赤铜矿(当Cu≈00016 mol/L)、孔雀石及黑铜矿(当Cu≈0 0079mol/L)等次生矿物，溶液中Cu的存在形式也发生了变化，即CuCO3所占的比例不断减小，而Cu2+和CuO H+的含量则相继增高，且Cu2+的增幅大于CuOH+。

First, For the coronary artery stent, two kinds of loads, including the pressure named 〓 derivatively from the balloon and the counterforce named 〓 on the wall edge of the stent, have been taken into account in the analysis of the stent.〓 and 〓 were changing as the stent expanding. So, the expansion process of the stent could be considered as the process composing of many extremely short equilibrium processes, where 〓 and 〓 could be regarded as constants and the stresses, the strains and the displacements were obtained using NFEA in every processes. Then, the stresses, the strains and the displacements obtained in every processes or steps were added up to get the final structure of the coronary stent.

首先，解决了支架有限元分析的载荷非线性问题，认为医用心血管支架受到两种载荷的作用：球囊直接传递的压力〓和球囊对不锈钢支架丝壁边缘的反作用力〓，这两种载荷在支架分析中必须都考虑进去；〓为非线性载荷，随着支架扩张不断变化，处理时将支架扩张的整个过程看成由37个很短的平衡过程组成，在每个过程中取〓为常量，采用有限元法获得应力、应变、位移，最后将各过程的应力、应变、位移迭加起来就获得了不锈钢支架总的应力、应变和位移；本研究用变分法和有限元法模拟杆件拉伸证明了上述方法是合理的。

Our Executive Pharmaceutical Marketing MBA Program offers students the opportunity to c...

我们的行政医药营销工商管理硕士课程为学生提供了机会，培养的制定实施和评价不断变化的商业环境战略先进的研究工具，创新的营销计划和有效的方法的最新技术的理解

At valve repair, import relief valve repair complex; import relief valve, control valves are used the body parts of the opening gate to regulate the flow of medium, medium pressure to lower pressure after the valve simultaneously with the role of regulation headstock of the opening piece, so that after the pressure valve to maintain at a certain range, the inlet pressure at the ever-changing circumstances, to maintain outlet pressure at setting the framework of the back to protect its pipelines, equipment, pressure, temperature stability ..................

在阀门维修中进口减压阀维修比较复杂；进口减压阀是采用控制阀体内的启闭件的开度来调节介质的流量，将介质的压力降低，同时借助阀后压力的作用调节启闭件的开度，使阀后压力保持在一定范围内，在进口压力不断变化的情况下，保持出口压力在设定的范围内，保护其后面管道、设备的压力、温度的稳定

Although China is anancient country, you are also confident in the future, is committed to next generation can dobetter than this generation, in addition to your growing economy, we are in line with China inscience and research with regard to the power input , including the construction of infrastructureand the use of technology, China is the world's largest country in the use of Internet technology,that is, we are very pleased that the Internet is today part of the activities, the country also hasthe largest mobile telephone network, for new investment to maintain continued growth, andresponding to climate change, there is new investment, I also hope that China would strengthencooperation in this area.

虽然中国是一个古老的国家，你们也是充满信心展望未来，致力于下一代能够比这一代做的更好，除了你们不断增长的经济之外，我们很配合中国在科学和研究方面所投入的力量，包括建设的基础设施和使用的技术，中国是世界上使用互联网技术最多的国家，这就是我们很高兴互联网是今天活动的一部分，这个国家也拥有最大的机动电话网络，对新的投资保持继续增长，和应对气候变化方面有新的投资，我也希望两国加强这方面的合作。

The result shows that desertification is serious in the study area. Various types of desertification land add up to 370000hm~2, accounting for 39% of the total land. From l995 to 2000,the serious desertification land, where vegetation cover is below 30%, extends with the speed of 61hm~2 per year. The increasing landscape fragment reflects the intense intervene that human activities act on landscape. Shape index changes indicate the growing ratio of interior -edge, which is disadvantageous to natural recover of land.

结果表明，研究地区沙漠化现象严重，各种类型沙漠化土地总面积37万hm~2占总土地面积的39％；植被盖度小于 30％的较严重的沙漠化土地从1995年到2000年的五年间以61hm~2／年的速度扩展；景观破碎度变大，反映出人类活动对景观的干预作用不断增强；沙漠化景观要素的形状指数变化表现出内、缘比变大，不利于沙漠化土地的自然恢复。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。