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持续     
相关语句
  sustainable
    Research of Land Use Changes and Sustainable Land Management in Fuzhou
    福州市土地利用变化与土地可持续利用研究
短句来源
    A Study on the Sustainable Use of Water Resources and Environmental Economy in the Huaihe River Basin
    淮河流域水资源可持续开发利用与环境经济的研究
短句来源
    Studies on Sustainable Utilization for Land Resources in Guizhou Province
    贵州省土地资源可持续利用研究
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    Research on Sustainable Water Resources Development Coordinating with Society and Economy in Basin
    区域水资源可持续开发与社会经济协调发展研究
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    Study on Sustainable Utilization for Regional Water Resources
    区域水资源可持续利用研究
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  sustained
    EVALUATING SPECIES RESOURCES IN CHINA AND THEIR SUSTAINED USAGE
    中国物种资源评价与持续利用
短句来源
    THE COUNTERMEASURE OF MINERALS RESOURCES SUSTAINED UTILIZATION OF CHINA
    我国矿产资源可持续利用对策
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    Sustained development and utilization countermeasuresof water resources in Shanxi energy sources base
    山西能源基地资源持续开发利用对策
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    The Countermeasure Study of Grassland Degeneration and Sustained Development in Gangca County, Qinghai Province
    青海省刚察县草场退化及持续发展对策研究
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    On the Sustained Utilization of Water Resources in China
    论我国水资源的可持续利用
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  sustaining
    Water Resaurces System Planning for Sustaining Utilization
    水资源持续利用系统规划
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    FUZZY OPTIMIZATION MODEL FOR SUSTAINING WATER RESOURCES UTILIZATION
    水资源可持续利用的模糊优选模型
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    Sustaining utilization of water resources and social development
    水资源可持续利用与社会发展
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    Present situation of water resources and study on its sustaining development in Momoge marsh
    莫莫格湿地水资源现状及可持续开发利用研究
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    Thinking on strategy of water resources sustaining utilizationin Liaoning province
    辽宁水资源可持续利用的战略思考
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  sustain
    The Management Mechanism of Sustain able Utilization of Northwestern Ru ral Resources
    西北地区农村资源可持续利用的管理机制研究
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    It abide to ecological rule, economic rule to develop, by mean of modern agricultural scientific skill and modem scientific management mode, measuring composite save-water skill to raise efficiency of material circulation and conversion of energy, to sustain increase of productivity, to protect agricultural resource in agricultural system. Its purpose is "high output, high efficiency, good quality, low waste".
    节水生态农业是遵循生态规律和社会经济规律,依靠现代农业技术和科学管理手段,采取综合性的节水措施,以提高农业系统物质循环和能量转化效率,以持续增长的生产率,持续协调的农业生态环境,持续利用与保护的农业资源为目标,以“高产、高效、优质、低耗”为宗旨,用现代工业来武装、实行现代经营管理方式的农业综合体系。
短句来源
    So studying on the balance between supply and demand of region water resources has very important theoretical and practical significance to sustain the development of society, economy and environment.
    因此研究区域水资源供需平衡,对促进区域社会、经济、环境的协调持续发展具有非常重要的理论和现实意义。
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  sustainable
Biorefinery based on biomass resources is an important approach for the oil refining and petrochemical industry to achieve sustainable development.
      
This increasing trend indicates an adequately strong ability for sustainable development.
      
To improve soil quality and maintain sustainable productivity, some measures, including planting mixed conifer with hardwood, preserving residues after harvest, and adopting scientific site preparation, should be taken.
      
Ecological footprint (EF) is one of the most important indicators in assessing the status and capacity of sustainable development.
      
In conclusion, the regional and forest development in Yanbian was sustainable, and the implementation of NFPP was favorable to improving sustainable development of forest region.
      
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  sustained
Chitosan-sodium alginate-hemoglobin microcapsules are expected to become an artificial oxygen-carrying therapeutic agent with sustained release for intravenous injection.
      
Respiration and circulation were sustained during the brain-dead state.
      
Sustained proteinuria is an independent risk factor leading to kidney fibrosis and end-stage renal failure.
      
This study shows that the addition of SB203580 to PC12 cells causes the sustained activation of B-Raf but not of ERK.
      
Therefore, these results indicate that SB203580 influences not only c-Raf as previously reported, but can also induce the activation of B-Raf, which in conjunction with EGF causes the sustained activation of ERK and differentiation in PC12 cells.
      
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  sustaining
Exact solution of an automodel (self-sustaining) problem regarding the motion of a nonviscous heat-conducting gas bounded by a v
      
The boundary conditions at the wall are taken in a form which ensures an automodel (self-sustaining) state.
      
The main physiological function of the capillary blood vessels consists in sustaining the exchange processes between blood and tissues.
      
The results are given of a numerical calculation of the similarity problems of a piston and self-sustaining thermal wave.
      
The special features of the flow round such screens are due to the strong self-sustaining blowing of gas into the base region.
      
更多          
  sustain
One Possible Mechanism to Sustain Combustion inside a Closed Region under Zero Gravity
      
The computations showed that the proposed mechanism of oxygen transport to the flame zone really can sustain an almost stationary regime of combustion.
      
The angular velocity is sufficient to sustain the centrifuged state of the fluids.
      
The ability of phospholipids with different structures of the polar head (phosphatidylpropandiol, phosphatidylglycerol, phosphatidylinositol, and cardiolipin) to sustain radiation-induced fragmentation was studied.
      
The sound intensities required to sustain a certain interval between two ultrasonic sensors that are installed outside a steep pipe for structural health monitoring are numerically investigated.
      
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  其他


The fishery of the spanish mackerel (Scomberomorus niphonius Guvier & Valen-nes) is one of important fisheries in the areas of the Yellow Sea and Pohai Sea. Wehave adopted the the bioeconomio model which is based on both Scheafer model andFox model, to discuss the problem of profit, energy consumption and employment ofthe fishery. The values of the maximum revenue (U_(max).),optimum economic effort(f_(oop)) and optimum energy consumption (O_(opt)) were estimated. These values are pres-ented in table 2. If the...

The fishery of the spanish mackerel (Scomberomorus niphonius Guvier & Valen-nes) is one of important fisheries in the areas of the Yellow Sea and Pohai Sea. Wehave adopted the the bioeconomio model which is based on both Scheafer model andFox model, to discuss the problem of profit, energy consumption and employment ofthe fishery. The values of the maximum revenue (U_(max).),optimum economic effort(f_(oop)) and optimum energy consumption (O_(opt)) were estimated. These values are pres-ented in table 2. If the bed economic result is the managemen objective of the fisherywe can get the maximum revenue (U_(max)=19.65 millions) and the optimum energyconsumption when the level of the effort is (f_(eop)=2900). Comparing to the resultobtained from the management objective of maximum sustained yield, the revenuewould increase 15. 5% and the energy consumption would be decreasd 26.8%. But theyield would reduce 7.2% about 2000 tons. If the employment is the management ob-jective of the fisheries, the effort might be controlled to 5400. Comparing to the resultof the best economic result. the employment would be increased 76.8%, but the reveuewould reduce 35.2% and the energy consumption would be increased 78.9%.

蓝点鲅(Scomberocmorus Niphonius Cuvier & Valennes)是我国渔业的重要捕捞对象之一。本文用生物经济模式(基于 Schaefer 模式和 Fox 模式)讨论了蓝点鲅渔业的经济效益、能源消耗和就业等问题。对其最大经济效益(U_(max))、最适能源消耗(O_(?t))和最适经济捕捞努力量(f_(?op))等数值作了估算,列于表2。如果以最大经济效益为这个渔业的管理目标,将捕捞努力量控制在最适经济捕捞努力量水平(f_(?op) 约为 290O),就能获得最大经济效益(U_(max)=19.65百万元)。把这个结果与最大持续产量的结果相比,渔业的经济效益将增加15.5%,能源消耗减少26.8%,但产量将下降7.2%,约2000吨。如果以增加就业为这个渔业的管理目标,捕捞努力量可控制在5400左右、和最大经济效益的结果相比,捕捞力量可多安排76.8%,但是渔业经济效益下降35.2%,能源消耗将增加78.9%。

The author gives an evaluation on thr resource of Trichiurus haumela from thr viewpoint of mathematioal patterns so as to discuss the adjustment of fishing fish age group structure and the approach of rational exploitation. The results are as follows: Growth Parameter:W=2176g K=0.274 t_0=-0.67 Naturel Mortality Coefficient:M=0.44 Fishing Mortality Coefficient:F=0.1 (early part of the sixties) F=2.09 (later part of the seventies) Maximum Sustained Yield MSY=461×10~3kg Fishing Effort f_(max)=3820×10~2 operation...

The author gives an evaluation on thr resource of Trichiurus haumela from thr viewpoint of mathematioal patterns so as to discuss the adjustment of fishing fish age group structure and the approach of rational exploitation. The results are as follows: Growth Parameter:W=2176g K=0.274 t_0=-0.67 Naturel Mortality Coefficient:M=0.44 Fishing Mortality Coefficient:F=0.1 (early part of the sixties) F=2.09 (later part of the seventies) Maximum Sustained Yield MSY=461×10~3kg Fishing Effort f_(max)=3820×10~2 operation day (60 horse power motor sailing boat) If K=2.0,initial age for fishing 1 year old.Yiold/Roplacement will be an increase by 25%;K=2.0.initial age for fishing 2 years old,then Yield/Replacement: an inerease by 20%. With the view to adjust fishing fish age group structure and exploit the resource rationally,it is more reasonable to restrict the catoh of towing net fishing within 1.5 years old age fish.

本文应用数学模式对带鱼进行评估分析,并探讨调整捕捞结构,合理利用资源的途径。结果为;生长参数:W_∞=2176克,K=0.274,t_0=-0.87。自然死亡系数:M=0.44捕捞死亡系数:F:在六十年代前期为1.01,七十年代后期为2.09。最大持续渔获量:MSY=922万担。相应的捕捞力量f_(max)=3829×10~2作业日(60马力机帆船)根据当前的捕捞状况,若F=2.0时,开捕年龄由0.5龄推迟到1龄和由1.0龄推迟到1.5龄。则单位补充量渔获量 Y/R 分别可提高25%和20%。当前调整捕捞结构、合理利用资源的途径以限制夏、秋季拖网渔船捕捞1.5龄以下的带鱼比较合宜。

Landscapes, as a phenomenon that generally exists in the world of nature, often compose major resources for tourist industry. Landscapes for tourism may be an artificial body or natural body of astronomy,geography and paleontology, or an artificial-natural combination. Geological landscapes are a subtype in the classification,part of which can be incorporated into landscapes for tourism and called the geological landscapes for tourism.The landscapes and landscape resources are two quite different conceptions....

Landscapes, as a phenomenon that generally exists in the world of nature, often compose major resources for tourist industry. Landscapes for tourism may be an artificial body or natural body of astronomy,geography and paleontology, or an artificial-natural combination. Geological landscapes are a subtype in the classification,part of which can be incorporated into landscapes for tourism and called the geological landscapes for tourism.The landscapes and landscape resources are two quite different conceptions. Landscape resources , similar to mineral resources, have both natural and economic attributives.Tourist resources have a parasitic feature.They do not exist independently but reside in various types of resources, they are the extension and expansion of other kinds of resources. The disciplines in which the tourist resources are parasitic are the bases for evaluating these resources. In general natural resources are not boundless, continuous or stable. The deformation and degradation of some of the landscapes caused by the deviation of understanding and management from basic disciplines will lead to irredeemable results.This paper discusses the characteristics, functions and classification mode) of the geological landscapes for tourist industry.

景观是一种现象,在自然界里普遍存在,往往构成旅游的主体资源。旅游景观可以是人工体或天、地、生的自然体亦或是人工或自然的综合体。地质景观是景观中的一个亚类,一部分可列入旅游景观而称为旅游地质景观。 景观与景观资源是两个不同的概念。景观资源与矿产资源一样具有自然和经济两种属性。 旅游资源具有寄寓特性。它不单独存在而是寄寓在各类资源之中,是各类资源属性的延伸和扩大。所被寄寓的学科是评价这一资源的基础。自然资源从总体来说不是无限的、持续的、稳定的。对某些景观出现变态、退化等现象,如从其认识到治理偏离基础学科会出现难以挽回的失误。 本文论述了旅游景观资源的性质与功能以及分类模式,特别是旅游地质景观的特点。

 
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