衰變周期 的英文怎麼說
中文拼音 [shuāibiànzhōuqī]
衰變周期
英文
decay period-
This paper aims to explore systematically some scientific principles of resource - based cities from their formation and development to contabescence or transformation in the context of theories of resource life cycle and sustainable development. it also discusses the scientific issues of connotation, models and transformation mechanism of resource - based cities, makes an integrated assessment on their sustainable and renewable capiabilities of those cities and brings out several measures and policies for the transformation of resource - based cities in china
本論文的研究目的是從資源生命周期理論、可持續發展理論等出發，系統地分析總結資源型城市從形成、發展到衰亡或轉型的整個過程中的科學規律，探索資源型城市功能變化機制的科學問題，科學界定資源型城市內涵和發展或轉型模式，綜合評定資源型城市可持續發展和再生能力，探索我國資源型城市功能轉型機制和發展模式以及各種途徑與對策。There are a lot of categories of the small business enterprise gathering cluster, in the united states, italy, switzerland, japan, china etc. the small business enterprise gathering cluster that stride over several industries section can adapt variety and resist the decay of economic period
這些中小企業集群的具體作用體現在：能夠使有限資源高效聚集起來，以滿足城市與地區經濟發展；中小企業集群政策可以為實現產業目標和重振產業服務；跨越多個產業部門的中小企業集群能更好地適應變化和抵抗經濟周期中的衰退。The shallow thermocline distributes in the areas of guangdong, guangxi, fujian and vietnam continental shelf, with obviously seasonal variabilily, and at the same time, in the south and middle areas of nanhai, even in winter when there is no thermocline in the coastal area, there also exists the shallow thermocline
後者廣東、廣西、福建沿海陸架區則與黃、東海相同，表現為季節性溫躍層，有成長、強盛、消衰、無躍層的年周期變化過程。南海深溫度躍層基本屬於水團疊置型，躍層分佈范圍及躍層強度、上界深度、厚度與氣候關系不大。The maincharacter of pollen assemblages in the site was the peaks of typha in the final stage of the liangzhu culture and dominant proportion of typha in the maqiao culture, denoting large water areas around the site
該遺址孢粉記錄表明，良渚文化晚期和馬橋期出現大量的香蒲，遺址周圍池塘沼澤面積較大。 2 、太湖流域新石器時期文化遺址的興衰與地勢、氣候、海平面的變化以及太湖碟形湖盆體系的發育密切相關。The operating principle of the compressed electret micromotor is the variable capacitance. the attenuation time constant of the charges on rotor surface is much longer than the shaping time of electret itself while the rotor is made of electret
扁平駐極體微電機的工作原理是電容可變原理，電機轉子採用駐極體材料製成，轉子表面電荷的衰減時間常數要比駐極體本身形成的周期長得多。The second part, with the aid of many types constructive transformation and symbolic computation ( especially wu algebraic elemination method ), some topics in nonlinear evolution equation are studied, including exact solution ( solitary solution, periodic solution, rational function solutions and jacobian function solution ), backlund transformation, cole - hopf transformation, dromion solution and its construction etc. charter 2 introduces ac = bd model and its application about partial differential equations
第二部分以構造性的變換及符號計算特別是（吳代數消元法）為工具，來研究非線性演化方程中的一些問題：精確解（如孤子解、周期解、有理解和雅可比橢圓函數解（雙周期解）等） 、 backlund變換、 hopf變換， dromion解及衰變結構等第二章介紹了求解pdes的ac = bd模式及其在偏微分方程中的作用。In chapter six, analyze the evolution route where the enterprise clusters produces, grow up with the intergrowth theory, analyze the life period of enterprise clusters, analyze the impact on enterprise clusters development of the in technology chooses mechanism
第六章以共生理論觀點對企業集群產生、成長的演化路徑進行分析，對企業集群的培育期、成長期、成熟期、衰退期或蛻變期等生命周期現象進行剖析，分析了技術界面的選擇機制對集群發展的影響。First, this part discusses the characteristics of nation constructure of the combination of religion and politics in previous qin period. second, we discusses the development and declination of nation constructure of the combination of religion and politics. according to this background, we describe the five kinds of primary functional space transformation of city form in previous qin period and analyze the relations among them
5先秦城市空間格局的變遷本部分首先探討了上古時期祭政合一的國家結構的特點，以及商周時期祭政合一的國家結構的發展與衰落，並以此為背景，就先秦城市中的五個基本的功能空間在城市中的變遷軌跡及其相互關系的演變作了初步的梳理。分享友人