sand drift 中文意思是什麼

sand drift 解釋
流沙。

  • sand : n 1 沙。2 〈 pl 〉 沙灘,沙洲,沙地,沙漠。3 〈 pl 〉 沙粒;(計時用的沙漏中的)細沙。4 光陰,時...
  • drift : n 1 漂亮;(潮流的)推進力。2 漂流物;吹積物;堆積物;【地質學;地理學】冰磧,漂礫。3 傾向,趨勢...
  1. Wind - drift sand hazard in kubuqi desert and its control

    庫布齊沙漠風沙危害及其治理技術
  2. The constructional technology in tunnel of great section wind drift sand

    公路大斷面風積砂隧道施工技術
  3. Construction of vertical shaft passing through drift sand and experience lesson

    立井過流砂施工及經驗教訓
  4. Study of high - pressure rotary jet grouting in inclined shaft construction crossing through drift sand ground

    高壓旋噴在斜井井筒過流沙層施工中的技術研究
  5. The function of desert microbiotic crusts in erdos was analyzed, the results ahowed that : microbiotic crusts consist of fine sand and thick powder sand, but differs with the wind - drift sand, wind - drift sand are coarse sand and fine sand ; microbiotic crusts influence the rainfall distribution again and effect on the evaporation of infiltration moisture ; microbiotic crusts has the power of water conservation and the function of enrichment of nutrients

    摘要本文對鄂爾多斯沙漠生物結皮作用進行了初步研究,結果表明結皮層的機械組成以細沙和粗粉沙為主,而流沙以粗沙和細沙為主;生物結皮層影響降水的再分配作用,並影響入滲水的蒸發規律;生物結皮層縣有較好的保水特性和養分富集作用。
  6. The uranium deposits are obscured by sand, peat and glacial drift.

    鈾礦床被砂子,泥炭和冰磧物所覆蓋。
  7. A recommend value of appropriate roadbed height is put forward according to the sand dune type and the highway grade, make investigation to the sand harm and other problems of built highways in desert areas gathering the related materials of present day highways, and then make comprehensive and systematic statistics to related data and racious factors which affect the roadbed height ; analy the suitable roadbed height for the windblown sand drift passes through smoothly according to the open country windblown sand field test ; test and verify the outcome according to indoor wind tunnel test ; finally a appropriate recommend roadbed height value will be put forward for different grade highways in different areas, which is according to the analysis of roadbed stability the roadbed height economic analysis and different use requirement to different grade highways

    收集現有沙漠公路的有關資料,對全國已建沙漠公路進行沙害及其他病害調查,對相關數據和影響沙漠公路路基高度的各種因素進行綜合系統地統計分析;通過野外風沙流場測定,分析適宜風沙流順利通過的路基高度;通過室內風洞試驗進行驗證;結合路基穩定性分析、路基高度的經濟性分析,考慮不同等級公路的使用要求,最終提出不同地區不同等級沙漠公路路基填土高度的合理高度建議值。
  8. The research test of this discussion as follows : making investigation and research to overseas related materials ; make investigation to built highways in desert areas, dozens of routes and nearly 100 road sections have been surveyed, among them two highways have been taken as the chief investigation objects, they are " 210 national highways - first grade highways from bao tou to dong sheng " and " the section of nei meng a la shan meng s307 from shang de to meng gen " ; the relationship between windblown sand drift and the roadred height wind tunnel test ; make investigation to the tested road sections and subengineerings then make statistics and study according to the test outcome ; the stability analysis of different roadbed height ; the analysis of roadbed economy

    本課題的研究工作包括:對國外相關資料的調研分析;對已建沙漠地區公路進行調查、觀測了十余條線路,近百段路段,以『 210國道包頭至東勝一級公路』 、 『內蒙阿拉善盟s307尚德至孟根段』為主要調查對象;風沙流路基高度的關系、風洞試驗;對調查路段及依託工程調查、觀測結果統計研究;不同高度下路基穩定性分析;路基經濟性分析;按照沙丘類型及公路等級提出路基合理高度推薦值。
  9. In this paper, on the basic theories foundation study of summary people of the past, aiming directly at whether the shelter forest can deposit the sand and how powerful it can. we select the oasis in ulan buh desert as the study plot, and study the function of the shelter forest reduce the " sand " and " dust ". we draw the following conclusion. first, in the fixed and semifixed sand lands, which grow the natural sand - binding plants, the coverage of plant in the fixed and semifixed sand land is 26. 4 % and 10. 3 %, respectively, the amount of sand drift decrease 93. 38 % and 81. 91 % comparing with the migratory sand land which have no plant coverage in the same wind speed and the range of 0 - 40cm above the ground

    本文以前人的研究為基礎針對「防護林體系是否有降解作用,有多大的降解作用」這一問題以烏蘭布和沙漠邊緣的防護林體系為研究對象,研究了防護林體系對「沙」 、 「塵」的降解作用,得出以下結論: ( 1 )在距離地表0 - 40cm范圍內,同一風速下生長有天然固沙植物,植被蓋度分別為26 . 4 、 10 . 3的固定、半固定沙地上,地表起沙量分別比無植被生長的流動沙地降低了93 . 38 、 81 . 91 。
  10. The main purpose of this discussion is to det ermine the appropriate roadbed earthfill height according to the degree of sandburry, windblown sand drift test, wind tunnel test, windbed stability, road economy and traffic accident analysis. the appropriate roadbed earthfill height is one of vital factors in preventing highways from the harm of sand

    本課題研究的主要目的是沙漠公路在地理地貌、植被地質、沙源、風速強度等因素的影響下對公路形成的沙埋和風蝕危害,結合公路沙埋、風沙流實驗、風洞實驗、路基穩定性、道路經濟性、交通事故分析,確定路基的合理填土高度。
  11. Shelter structure and effect of farmland shelterbelt in sand - drift area in yulin

    陜北榆林風沙區農田防護林結構配置與效益研究
  12. Most of the soil had been washed away or buried in drift after the removal of the trees ; only where the streamlet ran down from the kettle a thick bed of moss and some ferns and little creeping bushes were still green among the sand

    在樹木被搬走以後,大部分土壤不是被雨水沖走就是埋成了堆,只在那細泉從鍋中溢出后形成的細流邊上,有一塊厚密的苗床,上面長著些苔蘚羊植物和蔓延在地面上的小灌木叢,仍然在這沙地上搖曳著一片碧綠。
  13. It was for this reason that he did not trust himself to the river astride one of the many drift - logs which lined its sand - spits

    而且,也正是因為這個原因,他才沒有跨上那些與河灘線并行的浮木,讓河水把他帶走。
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