限界戰線 的英文怎麼說
中文拼音 [xiànjièzhànxiàn]
限界戰線
英文
the last armored train-
This paper, takes rli as an object of study, takes property rights relationship and management relationship of rural land as a main clue, takes raising the management benefit into full play of rural land and ensuring rural land sustainable utilization as objective, uses the theory of western institution economics and market economics for reference, adopts the method of study of combining macro analysis with microanalysis and combining quantitative analysis with qualitative analysis, reviews systematically the developing process of rli in china since the founding of our country and the developing tendency of rli in the world, summarizes the influence law of rli to rural land management benefit, analyses the innovative mechanis m. institutive achievement and being faced with difficult position and gauntlet of the present rli in china, and defines the objective and following principles of rli innovation proceeding from the actual conditions of our country. on the basis of these, constructs the innovative models by stages of rural land property rights institution and management institution, which accords with the market economic law and the law by stages of rural economic developing levels and gives consideration to efficiency and fair
本文以農村土地制度為研究對象，以農村土地的產權關系和經營關系為主線，以農村經濟發展水平（包括農村生產力發展水平和農村工業化、城鎮化水平）和農民的承受能力為依據，以最大限度地提高農地經營效益、確保農地資源的可持續利用為目的，借鑒西方新制度經濟學理論和市場經濟理論，採用宏觀分析與微觀分析、定量分析與定性分析、規范研究與實證研究相結合的研究方法，系統地回顧了建國后我國農地制度的演變過程及世界農地制度的演變趨勢，總結了農地制度對農地經營效益的影響規律，分析了我國現行的家庭承包經營責任制的創新機理、制度績效及其面臨的困境與挑戰，並從我國的實際出發，確定了農地制度創新的目標及應遵循的原則，在此基礎上構建符了符合市場經濟規律和農村經濟發展水平的階段性規律、兼顧效率和社會公平的階段性農地產權制度創新模式及其對應的經營制度創新模式。Big airlines have changed airline structure of point - to - point to that of hub - spoke. international airport tends to large - scale hinge and small - medium airport is facing more serious challenge for its limited spoke range and less lines. the subject of " the opportunities and challenges encountered by shanghai airport " sets forth the necessity of shanghai airport developing into an international aviation hinge and the importance of changing shanghai into international economic center
大型航空公司將原來點到點的城市對式航線結構調整為以幾個城市為中心的「中樞?輻射」 （ hub - spoke ）系統航線結構，世界空港的發展趨勢是樞紐空港的規模愈來愈大，而中小型空港，因其輻射范圍有限，航線航班相對較少，生存和發展面臨嚴峻的挑戰。At the meantime, the rock mass may alternate between loading and unloading and it exists in certain kind of liquid, such as surface water, unconfined water, confined water etc for its intrinsic crannies. the practical rock mass concerned project must solve the key stability pr oblem after the understanding of the complicated mechanical characteristic and the deformation trends to guide the following project design and construction for the demand of security, economy, feasibility and validity. however, the intrinsic nonlinearness and complexity of the engineering rock mass become the main difficulty to predict the stability and deformation, the corresponding structure design must ensure enough safety with all the determinate or random force combination, so a model without the geometry distortion and constitutive equation warp is necessary to be built for the quantificational analysis of practical structure ' s stress, for the simulation of the real process and for the determinate evaluation system and optimization
由於實際工程巖體其固有的非線性和復雜性，使得求解對應的諸如其穩定性、變形等問題面臨較大的困難，而有關的工程結構的設計必須保證該結構在外來因素的作用下具有足夠的安全度、經濟性和合理性，這必然要求對巖體及其工程結構的受力與變形有一套量化評判體系和優化技術，抓住實際工程問題的本質特徵並建立可行的符合幾何模擬、本構模擬、受力模擬、過程模擬四原則的求解模型，通過該模型的數值模擬成果來指導巖體工程的設計、施工及運營、管理；而巖體結構面的存在使得基於傳統連續介質力學理論的理論分析和數值模擬面臨巨大的挑戰，物理模擬的試驗周期和成本也大大增加，而巖土體工程問題則成為典型的數據有限、了解程度有限類問題，這類問題的解決需要綜合應用理論分析、經驗判斷、物理模擬和數值模擬等方法，數值模擬可以完成目前許多技術手段無法完成的實驗，如參數控制，復雜條件下的邊界條件的處理，同時數值模擬具有高可重復性，且數值模擬的成本和人力開銷等遠低於物理模擬，因此研究巖土體工程問題的流形元數值模擬方法是一項具有理論和實際工程應用價值的重要課題。Wireless sensor networks ( wsns ) are believed to be the first of the top ten technologies that will change the world in the future. however, limited computing, memory, communication capabilities, and especially the severe energy constraints present major challenges for such a vision to become a reality
無線傳感器網路被認為是未來改變世界的十大技術之首，但有限的計算、存儲和通信能力，尤其是嚴重受限的能量使其應用前景面臨巨大挑戰，這些特點也使得傳統網路的機制無法直接用於無線傳感器網路。分享友人