可保持的

With the development of the world economic trade , it had been becoming more and more concerned by policymakers that to study and inquire into the management model and theory and fissile continued development of the modern port enterprise.

随着世界经济贸易的发展，研究和探讨现代港口企业的管理模式和管理理论，保持港口企业的可持续发展，日益受到港口企业决策者们的关注和重视。

Meanwhile,this growth of the fixed capital investment is quite

但也应该看到，此次固定资产投资的较快增长，和20世纪80年代和90年代有较大的不同，应采取针对性的对策，在保持经济可持续增长的情况下，对最终需求结构进行调整。

Firstly, the two parts are solved separately, and the results are then coupled together. Because the thickness of the combustion reaction zone at high Re and Da numbers is less than the turbulent diffusion scale in diesel engines, the flame is extremely thin, its micro-structure keeps the laminar structure, so the turbulent flame can be regard as the ensemble of locally one dimensional, thin laminar flamelet embedded within the turbulent flow field.

由于柴油机中在高雷诺数和高Damkoeler数的情况下，燃烧反应区厚度小于湍流耗散尺度，火焰极薄，其微元保持层流结构，因此，湍流火焰可视为嵌入湍流流场内局部具有一维结构的薄的层流小火焰的系综，这便构成了层流小火焰模型主导思想，同时也使层流小火焰模型模拟柴油机湍流燃烧过程成为可能。

If equally high electronic conductivity can be introduced into fluorite matrix, They will be applied in oxygen membrane.

如果在较低的温度(600℃-800℃)工作，同时能够有效抑制电子导电的贡献，并保持高离子导电率，则CeO〓基材料可作为中温SOFC的固体电解质材料，所以在CeO〓基掺杂稀土离子的研究具有重要的意义。

Introduced formal notations of derivative which keep the properties of derivative and their operations are easily realized on computer,A mechanization proving principle of automatic reasoning of transformations between differential equations is built.

引进保持性质的导数的形式记号，建立了微分方程变量间依赖关系的自动推理的机械化证明原理，从而方程间的变换（如Backlund变换等）均可机械地验证。

Mass fraction) sodium erythorbate ;nonenzymatic browning of greengage juice was restrained more remarkably by vacuum concentration than by normal pressure concentration;the non-enzymatic browning of greengage juice increased and the color darkened with the increase of concentration and processing temperature;non-enzymatic browning of greenga.

结果表明：在青梅果打浆时加入质量分数为0.2%的异抗坏血酸钠，可防止果汁氧化褐变而保持天然淡黄色泽；减压浓缩较常压浓缩明显抑制了非酶褐变的发生；随着果汁含量和加工温度的提高，非酶褐变加快，色泽加深；低温有利于青梅浓缩汁的贮藏，冷冻贮藏是最佳的贮藏条件

The adaptive current and voltage instantaneous trip protective relays overcome the shortcomings of the conventional ones, such as their unchangeable settings and their protect range depending on system operating conditions and the type of fault.

自适应电流、电压综合速断保护克服了传统的单独的电流保护和电压保护一成不变的定值、保护范围受系统运行方式和短路类型的影响等缺点，可使保护范围始终保持在最优的状态。

Since its inception, to maintain "quality first, reputation first" principle, with advanced production and testing equipment, first-class products and services to meet customer demand, is to produce various models of gray cast iron, ductile cast iron and ordinary steel, alloy steel castings, such as 3000 tons.

公司自成立以来，保持"质量第一、信誉至上"的原则，用先进的生产、检测设备，一流的产品和服务来满足客户的需求，现可生产各种型号灰口铸铁、球墨铸铁及普通铸钢、合金铸钢件等3000吨。

Therefore, the early use of low-permeability reservoir development Diamond Anti-9:00 Well, diamond crack parallel to the main diagonal directions along the crack edge wells to increase water efficiency by the degree of widening further suppress the injection wells, well away from the row Kadoi premature flooded, and the overall benefit of fracturing; in the latter part of the diamond-shaped anti-9:00 Well Well turn the corner to form staggered rows like water injection means, thereby maintaining a high production rate and phase out the extent of mining.

因此，低渗透油藏开发初期使用菱形反九点井网，菱形主对角线平行裂缝方向，沿裂缝注水增加边井受效程度，拉大的井距又可抑制注水井排的角井过早水淹，且利于整体压裂改造；中后期将菱形反九点井网的角井转注形成交错排状注水方式，从而保持较高的采油速度和阶段采出程度。

Seventy percent of our body is water, and we need plenty of water each day to help digest and absorb food and nutrients, excrete wastes, moisturise the skin and maintain bodily functions.

人体有70%为水份，人每天都要饮用充足的水，帮助消化、吸收及排放废物，滋润身体，及维持体内各重要机能的活动能力；人需要有足够及洁净的水源才能生活，然后才可确保社群正常运作，保持社会的繁荣发展。

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。