查询词典 back surface

Thermoset Plastic Top Hard plastic seat, back and writing surface with table arm and book rack.

Thermoset塑料上面 Hard塑料位子、后面和文字浮出水面与桌胳膊和搁书架。

The gravity holds you to its surface, and pulls back to it the ball which you throw into the air.

引力使你保持在地面上，能把你扔到空中的球吸引回来。

Next day, in the fight, after his PT-109 ship is hit by the Japanese destroyer day fog two sections submerges, on the ship two people got killed, 11 people fell in the water, held including Kennedy's six people floated on the water surface hull, and got back other five survivors the float the torpedo boat wreckage place.

第二天，在战斗中，他的PT-109艇被日本驱逐舰天雾撞成两截后沉没，船上两人丧生，十一人落水，包括肯尼迪在内的六人抓住了漂在水面上的船壳，并将另外五名幸存者领回到漂浮的鱼雷艇残骸处。

Of or on the outer surface, underside, or back of an organ.

背部的器官外表面的或器官外表''。

A geothermal heat pump system can take advantage of the constant temperature of the upper ten feet of the Earth's surface to heat a home in the winter, while extracting heat from the building and transferring it back to the relatively cooler ground in the summer.

在冬天，地热热泵系统能利用地表上层10英尺（3米）处的恒温为家庭供暖，而在夏天，它则能除去大楼中的热量并将其转送回到温度相对较低的地面。

Coming back up from that depth and on the surface she sits perfect at the water line.

未来回到了从深度和表面上，她坐在完善，在水上行。

So I found an excuse to go back to the nature with my travelling bag in the weekend. I walked through a jungle, crossed a river, and finally arrived at a mountaintop. On a flat surface there, I put up my tent.

于是在那个周末，我终于找到了一个理由，带上行囊，穿过一片丛林，趟过一条小溪，爬上一座山顶，在山顶的平坦处，寻找一块地方，搭起了一个帐篷。

Presently narcissus stopped to drink from alittle stream.kneeling down on the bank,he saw alovely face in the clear water.你好s heart gave abeat.he smiled and was smiled back to.t你好nking that it must be amaiden in love with 你好m,he bent down to kiss her.and her lips also drew near 你好s.but as soon ashe touched the clear surface the lovely face disappeared.the angry youth was now desperate.never had he been looked downupon like that before.day and night,he stayed at the stream without drinking and eating.before long he died,never suspecting that 你好s maiden was just 你好s own image in the stream.the gods took pity on the fair dead body and turned it into aflower bearing 你好s name.

不久，那西塞斯降临一条小溪边饮水当他跪在岸边时，他发现清亮的溪水中有一张非常可爱的面庞他非常冲动，并对于着水中的人微笑，水中人也给了他一个微笑他认为，一定是一位女神爱上了他于是，他就蹲下去吻她，她的嘴唇也向他靠拢但是，当他的嘴唇一接触清亮的溪水，水中那张可爱的脸就消失了这位恼怒的小伙子人此时变得绝望了，他从未被人云云鄙视过改日夜呆在溪边，不吃不喝，不久就死了他从未思疑过水中的女孩只是自己的影子而已众神非常怜悯他那优美的躯体，把他变成了一朵重名的花

That's the target we've set ourselves by the end of this decade and one of the projects we have here in Athabasca is to take CO2, which is produced when we make the bitumen, and re-inject that into the ground in traditional oil reservoirs to help bring crude oil back to the surface.

这是我们所设定的2010年之前要达到的目标，而我们现在在阿萨巴斯卡河流地区进行的一个项目就是将生产沥青时产生的二氧化碳回收，重新注入到地下传统的石油储备层，帮助原油回到地表。

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。

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。