And it can be divided into four phases of urban tourism of china, in which there are different characteristics. ( 2 ) the evolutive rules of urban tourism of china are as follows : 1 ) the exoteric extent of tourism notion is more and more swell ; 2 ) the form of urban tourism renovate with the development of cities ; 3 ) the layout of urban tourism inner and outer is from close and complanate to exoteric and tridimensional ; 4 ) the sustaining system of urban tourism is from absent to as clear as a bell, and will reach a rational and advanced extent. 5 ) the social delamination of urban tourism is form stern to syncretic ; 6 ) the evolvement tendency of urban tourism should be generalized as a curve of accumbent " s ", which present a course makes up of low - grade development, high - speed development and balanced development
主要觀點歸納如下: ( 1 )城市旅遊是基於城市的發展而發展的,中國城市旅遊可分為古代、近代、現代和后現代四個階段,分別對應於前工業文明時期的城市旅遊、工業文明萌芽時期的城市旅遊、全面建設工業文明和后工業文明因素初露端倪時期的城市旅遊,以及邁向信息時代的城市旅遊,其間體現出不同的城市旅遊發展特徵; ( 2 )經歷不同發展的時期,中國城市旅遊表現出如下的演進規律: 1 )城市旅遊觀念開放程度逐漸增強,對城市旅遊的容納度日趨
加大,對城市旅遊地位的認識從忽視到關注再成為生活的必要因素; 2 )旅遊形式從單一走向多元,新的旅遊形式隨城市發展層出不窮; 3 )城市旅遊的內外部空間聯系從封閉平面走向開放立體,達到網路化、連綿化、分區化、立體化布局; 4 )城市旅遊支持系統從缺失走向健全,達到理性高端; 5 )城市旅遊社會分層從森嚴走向融合,經歷了「小眾旅遊」 、 「大眾旅遊」 ,
最終發展到「全民旅遊」 ; 6 )城市旅遊產業演變態勢可以概括為一條橫臥的「 s 」曲線,表現為低開?高走?平穩發展。
The results indicate that : 1. the main physical and chemical characteristics vary regularly : with rising of the altitude, there is a transition from silt > sand > clay to sand > silt > clay in the mechanical composition ; the argic horizon emerges below the altitude of 1600 meters ; the content of organic matter is enrichment, the content of organic carbon of epipedon is higher than 20 g / kg, while the content of organic carbon increases with increasing of altitude, and in the altitude of 3500 - 3700meters, the soils under the meadow have the maximum content organic carbon ; the soils appear acid - slightly acid reaction, the ph decreases appreciably and acid strengthen with increasing of altitude ; the soils higher than the altitude of 2500 meters are base unsaturated, indicating the soil leaching is strong, the ph and bs are distinct plus correlated ; the contents of sio2, al2o3, and fe2o3 of the soil body and clay are all relatively stabilization ; in the soil body, the content of sio2 is much high and cao is very little, the total contents of sio2, a12o3 and fe2o3 occupy 92 % of the mineral parts, the sequence of mineral elements is : sio2 > al2o3 > fe2o3 > k2o > mgo > cao > tio2 > mno
研究結果表明: 1太白山南坡土壤的主要理化性質隨海拔高度的上升呈有規律的變化:隨海拔高度上升,機械組成由粉粒砂粒粘粒逐漸過渡到砂粒粉粒粘粒,海拔1600m以下出現粘化層;土壤有機質豐富,表層有機碳含量一般在20g kg以上,有機碳含量隨海拔高度升高而相應增
加,海拔3500 3700m的灌叢草甸植被下有機碳含量
最高;土壤呈酸性或微酸性,並隨海拔上升, ph值略微降低,酸性增強,海拔2700m以上的土壤多呈鹽基不飽和狀態,表明土壤淋溶作用較強, ph值和鹽基飽和度呈極顯著正相關;土體與粘粒中的sio _ 2 、 al _ 2o _ 3 、 fe _ 2o _ 3含量相對比較穩定,土體中sio _ 2含量較高, cao含量較少, sio _ 2 、 al _ 2o _ 3和fe _ 2o _ 3含量之和約占土壤礦質部分的92 ,礦質元素含量的順序依次為: sio _ 2 al _ 2o _ 3 fe _ 2o _ 3 k _ 2o mgo cao tio _ 2 mno 。
If we stepped up our response, the best form of soviet pressure on hanoi would be acquiescence in our actions.
如果我們
加強自己的反應,那麼蘇聯對河內施
加壓力的
最好形式就是默許我們的行動。
Dendritic cells are characterized by their ability to efficiently present antigen, and are uniquely equipped to stimulate naive t cell responses. immature dendritic cells acquire antigens from throughout the peripheral body, then migrate to t - lymphocyte - dependent areas of lymph nodes. thus, dendritic cells act as bridges, operating at the interface of innate and acquired immunity
作為機體免疫系統中功能
最強的專職性抗原提呈細胞( antigen - presentingcells , apc ) ,樹突狀細胞( dendriticcells , dc )能高效地攝取、
加工處理和提呈抗原,具有較強的遷移能力,並能顯著地激活初始型t細胞以啟動t細胞免疫應答反應,此外, dc與b細胞以及nk細胞等也存在著相互作用,可見, dc在連接天然免疫和獲得性免疫之間起著非常重要的作用。
Leaders of 16 pacific island nations are gathering in fiji today for what ' s shaping up as one of the most acrimonious meetings in many years
多年來,太平洋群島論壇已演變成國際上爭論
最激烈的會議之一。今天,十六個太平洋島國家的領導人在斐濟參
加了這一會議。
Diplomats here this week say the atmosphere is relaxed, non - confrontational and more positive than the three previous rounds of negotiations held since 2003. they ended in increased acrimony and no progress
在北京的外交界人士本星期說,同2003年以來舉行的前三輪會談相比,這次會談的氣氛比較輕松,對抗性比較小,也更
加積極。在前三輪會談中,由於氣氛越來越緊張,
最終都沒有取得進展。
The most obvious change is the addition of "spikes".
最明顯的變化是「刺」的附
加。
Moisture tends to make pulp fibre expansion, raising paper thickness and uneven roughness. coating skill perhaps is one of solutions to isolate moisture in air. apply synthetic paper to replace pulp paper is a good alternative to resist moisture completely
濕氣會使紙張纖維膨脹增
加厚度及表面粗糙,重多解決的方法之一是採用塗布技術,應用合成紙取代紙漿制紙張來阻擋濕氣是
最加良方。
To be liberated from birth and death, to receive genuine help from the master, and derive the greatest benefits and blessing power there is, you should receive initiation
要了脫生死,要真正得到師父幫忙的
最大
最利益
最加持的力量,應該印心才行!
" even more importantly, copd is an increasing cause of chronic disability, " he notes, one that will " undoubtedly place an increasing burden on health resources.
「更重要的是, copd正在成為導致慢性失能的原因, 」他強調指出, 「這必將為醫療資源最加更重的負擔。 」