protecting ring 中文意思是什麼
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Based on the original data of tm in 1988, 1992 and 1998, then after some processing and analysis, the author have the thematic data of land - use by interpretation. on the basis of them, the author made the analysis of land - use for this area based on the spacial analysis of gis and the method of comparison between result of land - use classification as follows : the method of aggregating analysis, the analysis of urbanization, the analysis of the transformation rate of cultivated land, the analysis of the driving force of land - use change and the sustainable use of land. the conclusions may be demonstrated below : the cultivated land decreases with the patchs fragment ; road spreads radialy surround second - ring road ; the urban land expands quickly toward southwest along the major roads and be concentrative. rural land and industry increse rapidly with dispersing ; 0thers change slowly. the major driving forces of land - use change in this area are the rapid expansion of urban and rapid growth of population, foreign investment and the development of tertiary industry which was based upon the real estate. according the trendency of land - use change, the author consider that we must insist on the way of the sustainable use of land based on protecting the cultivated land
在此基礎上，應用分類結果比較法，在gis各種空間分析功能（幾何量算、統計分析、疊加分析及緩沖區分析）的支持下，對該區土地利用變化進行了如下分析：土地利用綜合分析、城市化進程分析、耕地轉化率分析、土地利用變化因素分析及土地的可持續利用分析。結果表明：該區土地利用變化主要表現為耕地大量減少，斑塊破碎化；交通用地沿二環線呈放射狀向四周擴展；城鎮用地沿交通干線向西南方向擴張迅速，用地趨于集中；農村居民點和工礦業用地增加，用地趨于分散；其它用地變化較慢。這一用地變化的主導因素是城鎮用地擴展快、人口增長迅速、外資的大量投入及以房地產為主的第三產業的快速發展。 -
Rc - masonry combination arch bridge abandons the disadvantages of conventional masonry arch bridge ' s falsework type construction, which makes longer construction time, higher cost and against protecting environment. compared with double arch bridge, it has better arch ring ' s integer and smaller distortion in the stage of use
Rc -石砌體組合拱橋摒棄了傳統石砌拱橋採用有支架施工造成的工期長，造價高，不利於環境保護的缺點；相比于雙曲拱橋，主拱圈具有整體性好，使用階段變形小的優點。 -
The affect of top ring beam has not been thought highly at presenti which has been regarded as the safety measure. the whole retaining and protecting structure of piles in row and top ring beam is calculated by the method of cantilever beam, and the result is not reasonable obviously
在當前的設計與施工中，樁頂圈樑的作用未引起足夠的重視，普遍將其視為安全儲備，而將排樁與圈樑的整體支護結構視為懸臂梁來計算的，這樣的計算結果顯然過于保守不盡合理。 -
It is on condition of the retaining and protecting piles imitated by nylon sticks, the top ring beam imitated by steel board, the foundation wadded by sandy soil, and the sectional size and extra load changed
本文試驗是以尼龍棒模擬支護樁，以扁鋼模擬樁項圈樑，採用砂土填築地基，通過變換圈樑的截面尺寸及堆載進行了八組試驗。 -
After tightening, the screw is secured and presses the disc firmly against the four - parted thrust ring thus protecting against slipping
在上緊后，螺絲可靠地把閥板壓在由四部件組成的止推環上，防止滑。 -
It is the effect of ring beam in retaining and protecting mechanics properties for excavation that this paper focuses on. in this paper, there are eight groups tests
本文所開展的試驗研究工作即是針對基坑支護結構中圈樑的剛度對整體支護結構的性狀影響。 -
Wdm ring network is a subject that quite deserves to study in protecting and resuming ability
Wdm環網就其保護恢復能力而言是一個相當值得研究的課題。
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