河谷階地 的英文怎麼說
中文拼音 [hégǔjiēde]
河谷階地
英文
valley terrace-
Dig jade is it leave riverbed in river valley terrace, do beach to refer to, ancient river and alluviation, diluvian gravel that fan have dig seeking and d jade gravel of the layer in front of the mountains the jade of these places is brought by the flowing water too
挖玉是指離開河床在河谷階地干灘古河道和山前沖積洪積扇上的礫石層中挖尋和闐玉礫。這些地方的玉也是由流水帶來的。Since the last glaciation, with variations in sea level, the development of incised valleys in the hangzhou bay area underwent three stages : 1 ) deep - cutting stage ; 2 ) rapid - filling stage ; and 3 ) rapid - burial stage
末次冰期以來，隨著海平面變化，杭州灣地區下切河谷演化經歷了深切、快速充填和埋藏三個階段。In the end, we forecasted the evolutionary trend of the river terraces in the mid - tail of weihe river according to their evolutionary characteristics
最後，根據渭河中下游各河谷階地的演化特點對其演化趨勢進行了初步的預測。Finally, each category of the classification system is that : 1 ) the extent of human activities as the first class : natural wetland landscape, half natural wetland landscape and artificial wetland landscape ; 2 ) geomorphology as the second class : flood land, depression, valley and terrace ; 3 ) marsh wetland vegetation as the third class, which amalgamated with the way of indistinct assemble classification
從而建立了一套完整的景觀生態制圖分類系統:第一級按人類活動影響程度劃分為:自然濕地景觀、半自然濕地景觀、人工濕地景觀;第二級按地貌劃分為:河漫灘、階地、湖濱、窪地、谷地;第三級對沼澤濕地植被25種類型進行模糊聚類歸並，得出不同比例尺的地圖制圖景觀類型。The ledo road and the pipeline went through some mostly uninhabited areas of burma with some of the most difficult terrain in the world, including tropical rain forest, torrential streams, terraces and canyons, jungle - covered mountains and swampy valleys
利多公路和輸油管道線經過一些緬甸的主要是無人區的地段，這些地段有著世界上極端困難的地理環境，如熱帶雨林、急流、階面和峽谷、布滿叢林的山脈和多沼澤的河谷。At the end of late pleitocene, influenced by the climate of glacier period, the last great event of the region in the geological time was taken place so that the migration and extinction of organism species were resulted, loess accumulation was generally developed throughout the whole region, in the holocene, the most important environmental change was fluvial process, which was still influnced by two factors - neotectonics and palaeoclimatic changes
更新世晚期末，受末次冰期氣侯的影響，本區發生了地史時期的最後一次大事件，造成了物種遷移和絕滅，全區廣泛發育黃土堆積。進入全新世，本區環境變化以河流作用最為顯著，沉積物主要分佈在各大水系的河谷中，構成一、二級階地和近代河床與河漫灘堆積。Therefore, the most important criteria for correlating terraces are usually the height of terrace scarps and their trend along river valleys
因此，階地的對比經常僅用階地面與現河床的高差，及其沿著河谷的變化趨勢。( 6 ) conclusion was obtained by the analyzing the mechanics environment and the stability of the lanslide on the right bank after the dam built : the value of the rock mass stress increased and the tensile stress region obviously reduced, the direction of the principal stress was unchangeable the dam and the landslide were stable under the dangerous condition ( the reservoir and at the same time the earthquake was viii ), but when the water lever suddenly fell and did not think of other force, safe factor evidently reduced, the dam and the landslide will be destroyed under the most dangerous condition ( the water lever suddenly fell and at the same time the earthquake was vi ) ; the stability of the landslide will be destroyed by the horizontal thrust under the most dangerous condition or ; the physical and mechanical parameter will be reduced due to long period filter, the landslide will be destroyed too
（ 6 ）建壩工程荷載條件下河谷巖體力學環境分析及右岸古滑坡體的穩定問題分析得出：建壩后河谷的巖體應力量值明顯增高，同時左岸的張應力區的范圍及量值明顯減小，主應力的方向依然與模型的底邊界垂直；大壩建成后逐漸蓄水階段以及同時考慮本區最強地震力的作用等各種不同的工況條件時，滑坡體及壩體總體上仍處于穩定狀態；水位驟降時，在未考慮其他外力作用的情況時，滑體的安全系數將顯著降低。若考慮水位驟降及本區最大地震力的共同作用，壩體將在滑坡體下滑推力的作用下產生破壞；建壩后水平推力對右岸古滑坡體穩定性的影響分析可以看出，在最危險的工況條件下，壩體及滑坡體也將處于臨界狀態；在長期滲透變形的作用下，由於滑帶的物理力學參數的降低而有可能導致壩體失穩破壞。This theme selected weihe river round tianshui, jinhe river round binxian, bahe river round lantian and luohe river round luochuan to study the evolutionary model of river terraces in the mid - tail of weihe river. we have built the cross - section of each river, and analyzed the evolution of each river terrace in the mid - tail of weihe river according to the velocity of downcuting and lateral erosion
本論文以天水渭南鎮段渭河、彬縣段涇河、藍田段灞河和秦家河段洛河為例建立渭河中下遊河流階地演化模式，以階地形成年代為標尺，根據下切速度和側蝕速度對渭河中下游各河谷階地的演化過程進行了分析。The initial people pick up beautiful and d the jade in the riverside, later again will arrive in the rivers fishes for the egg circular the sub - jade, again afterwards dug out these early rivers chongjiwu center from the river valley step gravel the beautiful jade ; again along the river traced subsequently discovers the growth bound primary in the rock yukuang
最初人們在河邊拾起美麗的和闐玉，以後又到河流中撈取卵圓形的子玉，再后來從河谷的階地砂礫中挖出那些早期河流沖積物中的美玉再沿河追溯繼而發現了生長在巖石裹的原生玉礦。Detailed diagnoses is made on a heavy - hard rain in the northeast qinghai - xizang plateau using ncep data of 1 x 1 with 6h intervals, more complete and integrated conventional observational data and the data set of automatic meteorological stations in plateau and new generation doppler radar data and satellite images and etc. the following conclusions can be drawn : 1. the distribution of heavy - hard rain, which is characteristics of valley topography in northeast qinghai - xizang plateau is obviously effected by topography. the distribution of yearly mean precipitation and the frequencies of heavy - hard rain in this area are descending from east to west
本文首先利用ncep時間間隔為6小時的1 1的格點資料、更全面、更為完整的常規探測資料和高原地區布設的自動氣象站資料、新一代多卜勒天氣雷達資料、衛星雲圖資料等對高原東北部地區大到暴雨的天氣、氣候特徵及大尺度環流背景進行分析，形成對高原暴雨的整體認識，並為以後的數值模擬提供大尺度環流背景及依據，分析中發現： 1 、高原東北部地區大到暴雨的分佈明顯受到地形影響，年降水量和大到暴雨次數自東向西呈階梯性遞減趨勢，分別在高原東北部的外流河谷地區和四川北部地區存在大值中心。The environment in dhv is facing the serious vulnerable period in the history due to its nature situation of half - year dry period, fragile geological structure and shallow soil, and its social situation of over dense population and over farming
由於乾熱河谷地區的地質結構不穩定、土層淺薄、人口膨脹、過度耕種，尤其長達半年的旱季等原因，導致該地區的生態環境處于極端的脆弱階段。分享友人