查询词典 back surface

Based on consider hereinbefore, this dissertation discusses several aspects on the problem of the sustainable and optimum exploitation of groundwater resources as follows:①reviewed entirely the origin and evolvement of the concept "sustainable development", stated and commented the study status in queue on"sustainable development"around national and international range, thorough discussed the science connotation about the concept "sustainable development";②looked back and commented across-the aboard some furthest basic concept and proposition related to groundwater resources, put forward self opinions on a few existent mistake points of view and chaos understandings;③expatiated entirely on the content and meaning of the theory of changeable groundwater resources system, contrast with the traditional methods of groundwater resources calculation and evaluation, combined example to show the application of this theory;④thorough analyzed the difficult and complexity to forecast the groundwater resources, fully stated the traditional methods of groundwater resources forecasting, pointed out the characteristic and applying condition of these forecasting method, introduced the main ideas and methods of wavelet analysis developed recently, and the MATLAB software be known as the fifths era computer language, and its accessory wavelet analysis toolbox, applied these methods and tools to analyze the groundwater dynamic curve, adopted the B-J method and Morte-Carlo method, combined with the theory of changeable groundwater resources system, discussed the new view on the forecast of groundwater resources;⑤synthetically analyzed the characteristics and limitations of the present all kind of groundwater manage model, combined mathematical programming, mathematical statistics, random process and the theory of variation system of groundwater resources on the unite optimum attempter of surface water and groundwater, emphasized how to make the model more nicety, more simple, more practicality;⑥analyzed the inside condition and outside condition to assure the sustainable and optimum exploitation of groundwater resources, the inside conditions are the follows: correct resources idea, scientific methods of resources calculation and evaluation, credible forecast methods of resources, exercisable measures of resources management, the outside conditions are the follows: the development idea of high layer, the transform of manage system, the matched policy and rule of law, the adjusted of economy lever, the improve of cultural diathesis, the boosting up of water-saving consciousness and detail measures, the control of population rising, the prevention and cure of water pollute, the renew and rebuild of ecology;⑦scan the sustainable and optimum exploitation of groundwater resources from the high level of metagalaxy, earth system science, and philosophy;⑧point out the more directions on groundwater resources.

它将为制定水资源的可持续发展目标和战略决策提供科学依据，为制定社会、经济可持续发展战略提供理论基础。基于以上考虑，论文主要从以下几方面对地下水资源可持续开发问题进行了比较深入的探讨：①全面回顾了"可持续发展"概念的由来与演变，对国内外"可持续发展"的研究现状进行了述评，并对"可持续发展"概念的科学内涵进行了深入探讨；②对涉及地下水资源的一些最基本的概念和命题进行了全面的回顾和评述，对目前仍然存在的一些错误观点和混乱认识提出了自己的见解；③全面阐述了地下水资源变值系统理论的内容和意义，并与传统的地下水资源计算评价方法进行了对比分析，结合实例具体说明了方法的应用；④深入分析了地下水资源预测预报工作的极端重要性和复杂性，对传统的地下水资源动态预测方法进行了全面的评述，指出了各类预测预报方法的特点及适用条件，对最近二十多年刚发展起来的小波分析技术的主要思想和方法及其应用范围，以及号称第五代计算机语言的MATLAB软件和附带的小波分析工具箱进行了介绍，并应用于地下水动态过程线的分析，采用时间序列中的B-J法，蒙特卡罗方法，与地下水资源变值系统理论相结合，探讨了地下水动态资料分析和地下水资源预测预报的新思路；⑤综合分析了现今各类地下水管理模型的特点及缺陷，将数学规划、数理统计、随机过程等与地下水变值系统理论相结合进行地表水地下水或多水源的联合优化调度，使模型更准确、更实用；⑥对保证地下水资源可持续开发的内部条件和外部条件进行了分析，内部条件主要是正确的资源观，科学的资源计算与评价方法，可靠的资源预测预报技术，可操作的资源管理措施，外部条件主要是高层发展思路、管理体制的变革、配套的政策法规、经济杠杆的调节、人文素质的提高、节水意识的增强及具体节水措施、人口增长的控制、水体污染的防治、生态的恢复和重建等；⑦从宇宙科学、地球系统科学及哲学的高度审视地下水资源的可持续开发；⑧指出了地下水资源可持续开发的进一步研究方向。

Because the eyes of "Xiaoming",like a naughty pebble stirred the mirrorlike surface of a lake,brought back my memories of someone I had long forgotten.

因为"小明"的眼睛像顽皮的石子激荡了水平如镜的湖面一样唤起了我对某个人的早已忘却了的记忆。

Back home, the snow is always a part of the spring, where the mountain snow, Yang Yi surface melting, while the nightside of snow since the winter and spring calendar with mountain dependent up to three months.

在家乡，雪永远是属于春的，那里高山积雪，阳面易融化，而阴面的雪，自冬历春可与山相依达三个月之久。

It is found that the nature of the interaction between CO and Pd(110) surface by population analysis and DOS analysis what the 5σ orbital of CO and the d orbital of metal formed electron donation; and the 2π* orbital of CO and 4s and 3d orbital of metal formed electron back- donation.

通过布居数分析和态密度分析发现， CO 和 Pd(110)表面的相互作用，主要是 CO 的5σ轨道和金属原子的 d 轨道形成5σ-d 配位键；同时 CO 的2π*轨道和金属原子的4s 和3d 轨道形成反馈键。

Fifteen minutes after landing, it opened its solar panels to receive sunlight, and soon sent images of the pebbly Martian surface back to earth.

在着路15分钟后，它展开他的单翼接收太阳能。把MARTIAN表面的图像回传到地球上。

The sagittal depth ," S ",(also called sagitta , sagittal height or sag)is the perpendicular distance between the geometric center of the back lens surface and the diameter of the lens.

12矢深，" S "，，指镜片内曲面的几何学中心至线状直径之间的垂直距离。

Exposure energy will change with different CCL , thickness of ink and baking stage , so we must carry on experiment to confirm printing ink minimum surviving width , surface gloss and photosensitive degree on the back , then establish suitable condition .

曝光能量会因基板的材质及涂膜厚度烘干程度之不同而有差异，故需进行试验确认油墨最小残存宽度，表面光泽及背面感光程度后，再设定适宜的条件。

Exposure energy change with different thickness of ink,so we must carry on experiment to confirm printing ink minimum surviving width,surface blare and photosensitive degree on the back,then establish suitable condition

曝光量会因基板的材质，及涂膜厚度之不同而有差异，故需进行实验确认油墨最小残存宽度、表面光泽及背面感光程度后，再设定适宜之条件。

Fire fighting material or equipment sign: square or rectangle shaped white pictogram on red back (red must be at least 50 % of the panels' surface).

消防材料或设备标识：正方形或长方形形状、白色图案、红底（红色必须占标识牌面积的50％）。

According to the relationship between form and logic, we simplify it over and over again to come-back and emphasize the feeling of its original body, at the same time design an extroverted texture on the surface according to the position of the window. The reformed building is fresh and elegantly, simple and pithiness.

按照形式与逻辑的关系，对它简化再简化，恢复和强调其本来的体块感，同时再表皮结合窗子的位置设计一个外向的格子肌理，建筑清新淡雅，简洁有力。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。