precipitation rate 中文意思是什麼

precipitation rate 解釋
降水率
  • precipitation : n. 1. 猛然摔下，落下。2. 猛沖；急躁，輕率，魯莽。3. 【化學】沉澱（作用）；降雨（量）；（雨、雪等的）降落。
  • rate : n 1 比率，率；速度，進度；程度；（鐘的快慢）差率。2 價格；行市，行情；估價，評價；費，費用，運費...
  1. The precipitation of northern hemisphere has a significant negative trend, lapse rate of precipitation during djf is - 0. 028mm / a. for the southern hemisphere, has n ' t pass the statistical significance. the flood / drought years are pick out in 1948 - 2001 for djf over global, northern and southern hemisphere, six large - scale areas, the results point out has significant decadal change in the flood / drought years of global, nh and sh in djf, during 1940s - 1970s global flood in djf occurred frequently and from 1970s - 1990s global drought in djf occurred frequently

    北半球有明顯的降水減少，約為- 0 . 028mm a ，南半球12 - 2月降水表現為極微弱的下降趨勢，且在統計上是不顯著的。劃分出了全球、南北半球、全球6個大尺度區域12 - 2月旱澇年，指出全球及北、南半球12 - 2月的旱澇有明顯的年代際變化。 70年代中期以前是全球洪澇多發期， 80年代到90年代為全球乾旱多發期。
  2. Both the annual banding growth rate curve and grey level curve show the evolution processes of the precipitation over the past 2000 years this region and that divide into seven dry / wet cycles

    石筍紋層厚度和灰度曲線比較清晰地揭示了本區過去2000年降水演化過程，可劃分7個干濕旋迴。
  3. By comparing i8o curve with annual growth rate and grey level curve in the stalagmite during the same period, the author brings forward that that climate in shennongjia region mostly embodies matching modes of warm / wet, cold / dry over the past 2000 years, but temperature was out of harmony with precipitation in the course of climate transforming, which shows that shennongjia climate embodies matching modes of cold / wet, warm / dry at part period of time

    近2000年中17次太陽活動和1400aad以來29次火山活動對氣候變化影響的印跡在石筍氧同位素中都有明顯的記錄，表明氣候事件與太陽活動、火山活動有較好的相關性。石筍各代用指標譜分析顯示126a 、 100a 、 81a 、 60a 、 40a 、 22a 、 11a等周期成分，也進一步支持了太陽活動對季風區短尺度氣候變化的驅動作用。
  4. Poly ( methacrylic acid ) ( maa ) and poly ( acrylic acid ) ( aa ) microgels have been prepared as templates by employing inverse emulsion polymerization techniques. four types of spherical organic - inorganic nano - composites have been prepared by introduction of precipitation agent into the pmaa / paa microgels containing appropriate rate metal ions

    本課題開展了兩個模板體系的研究，即分別以丙烯酸（ aa ）和甲基丙烯酸（ maa ）為聚合單體，利用反相乳液聚合方法合成了幾種包埋有不同金屬離子的高分子微凝膠。
  5. Studies showed that process and condition control had critical effect on the preparation of yig phase, and the proper conditions specialized as follows : using ammonia - ammonium nitrate ( nh3 - nh4no3 ) as precipitant, ph scope from 10 to 10. 5, using dissolving salt as law materials, dropping their mixed solution into precipitant, precipitation rate at 0. 8ml / min

    研究表明，共沉澱的過程和條件控制對yig的合成具有重要影響。實驗得出共沉澱的合適條件為：以nh _ 3 - nh _ 4no _ 3為緩沖溶液，控制ph范圍為10 . 0 ? 10 . 5 ，採用可溶性鹽為原料配製溶液，滴加到沉澱劑中的共沉澱方式，共沉澱速度為0 . 8ml min左右。
  6. The paper concludes that the changing rate of ndvi of rain forest in tropic is the smallest, the changing curve is smooth, while the changing rate of ndvi of the deciduous broad leaf forest in warm - temperate zone is the largest the change of ndvi is the most conspicuous in winter and spring ( especially in april ) while is not conspicuous in summer and autumn by analyzing the change of ndvi along latitude using the ndvi value of different vegetation types along the same longitude. the vegetation index from warm temperate zone to semitropical zone has obvious transition, while other areas have no distinct change by analyzing the change of ndvi from temperate zone to semitropical zone to tropical zone using ndvi averagejn the same time it is concluded that the sink value in the beginning of the year 1995 is from the influence of the monsoon in east of china by analyzing the ndvi curve of several typical needle leaf forests. the relation between ndvi value and temperature is conspicuous while the relation of precipitation is less or not by analyzing the relation between ndvi and temperature and precipitation finally it can get the conclusion that the change of river area is the smallest, the change of sienna area is the greatest by analyzing two phases of tm data in 1987 and 1997 with rs technic

    利用從同一經度的不同森林類型ndvi值分析，沿緯度方向ndvi變化可得出， ndvi在冬春季變化最明顯（尤其是在4月份最大） ，而在夏季和秋季變化不明顯。利用ndvi均值進行分析，從暖溫帶到亞熱帶到熱帶的變化情況發現，從暖溫帶到亞熱帶ndvi指數形成明顯的階躍，而其它區域沒有太大的變化，同時對幾種典型的針葉林曲線分析可知其年初的凹值源自於我國東部季風的影響。利用ndvi數據分析其與月均溫度與降水的相關性得出與溫度相關性較為顯著，而與降水相關性不顯著或無相關性。
  7. Main content in simulation is the spatio - temporal evolution of the set of descriptive variables characterizing tectonic mineralization state under coupling of various processes as following : ( 1 ) variables related to forming and property of ore - forming fluid, such as dissolution rate of minerals ( include metal minerals ) in rock, concentration and saturation of aqueous species in fluid, temperature, pressure, and ionic strength etc. ; ( 2 ) variables related to structural deformation and fluid flow, such as stress, deformation rate, fracture network, porosity, fracture permeability ; ( 3 ) variables related to precipitation and mineralization, such as nucleation rate of gangue and metal minerals, accumulation precipitation of various minerals, etc. ; ( 4 ) spatio - temporal coupling relation of various variables above, such as the coupling relationship between spatio - temporal evolution of fracture permeability and flow and focus of fluid and ore - forming

    模擬的主要內容是在各種過程耦合作用下，以下描述構造成礦體系的主要變量的時空演化：與成礦流體的形成和性質有關的變量，如地層中礦物（包括成礦物質）的溶解速率、流體中各組分的濃度與飽和度、流體溫度、壓力、離子強度等；與構造變形和流體運移有關的各變量，如應力與變形速率、巖石孔隙度、構造（斷裂）滲透率等；與沉澱成礦有關的變量，如礦物（金屬礦物和脈石礦物）的成核速率、各礦物的沉澱量等；上述各有關變量間的時空耦合關系，如斷裂滲透率時空演化與流體流動、匯聚和成礦的耦合關系等。
  8. Transportation of total nitrogen is meanly effected by precipitation, irrigation, rate of fertilizer application of agriculture, permeability of soil and thickness of unsaturated zone et al

    總氮的遷移主要受到大氣降水、灌溉水、農業施肥量、土壤的滲透性以及包氣帶厚度等因素的影響。
  9. The dsc results show that the electric fields have little influence on 8 " precipitation of al - li alloy. there is little change of the 8 " precipitate fraction and rate

    首次對電場作用后合金的析出動力學研究， dsc測量分析表明，電場固溶對鋁鋰合金'相析出動力學影響不大， '相的析出百分數和析出速率變化不明顯。
  10. The heating rate of the precipitation process is also adjusted to correspond to the rainfall amount observed

    此外，降水過程的加熱率亦會相應地調整，以符合實況觀測的雨量。
  11. 2. with the method of multiple point regression, a general formula was established to estimate the annual precipitation at different elevation. rr = 1056. 9 + luhzr in the equation : r x is the increasing rate of annual precipitation, and unit is mm / m

    根據多點回歸建立起估算區境任一海拔高度年降水量的通式： rz = 1056 . 9 + r hz r式中： r為需要計算點年降水量的垂直遞增率，單位為mm / m 。
  12. Critical value of precipitation rate of salt spray

    鹽霧沉降率界值
  13. Critical v of precipitation rate of salt spray

    鹽霧沉降率界值
  14. Rate of salt spray precipitation

    鹽霧沉降率
  15. The study has systematically investigated the characters of spatial and temporal variation of temperature and precipitation in qinghai since 1961, and the results show that the trend rate of annually average of temperature in qinghai is significantly higher than that of the other places in the whole china, with qinghai acting as a sensitive area of china climate warming, and that precipitation efficiency is also clearly improved

    以配合西部大開發進行基礎性、戰略性和前瞻性研究，為青海省生態環境與社會經濟的協調發展，水土資源的可持續利用提供科學依據。本研究系統分析了1961年以來青海省氣溫、降水等氣候特徵因子的時空變化特徵，表現在青海高原年平均氣溫變化傾向率要明顯高於全國，是中國氣候變暖的敏感區，降水的有效性發生了明顯變化。
  16. A preparation method of genome dna in spirulina with high quality and high extraction rate for rapd analysis is studied. the high quality genome dna was obtained from the pelitomorphic spirulina about 10 % water content after lyophilized, isolated with ctab buffer and two - time - precipitation method

    以含水量約為10的冷凍藻泥為材料，採用ctab緩沖液及二次沉澱提取法，建立了一個可獲得較高純度和得率、適用於rapd分析的螺旋藻基因組dna制備方法。
  17. Precipitation rate and particle size distribution of seede dprecipitation proceeding in sodium and potassium aluminate solutions

    溶液種分過程的分解率和粒度分佈
  18. In addition, the weibull distribution was used to modeling the spatial distribution of precipitation, and it is applied in the counter the regional runoff rate. and a new method was explored about the heterogeneous runoff ration on the subgrid scale

    另外在對降水量的空間分佈型的擬合上引進維伯爾分佈來描述降水量場的空間分佈非均勻性，並將之應用到推求陸面水文過程中的地表產流率中，探討一種新的區域產流計算方法。
  19. In part three, according to the viewpoint of system, giving consideration to all kinds of condition of forming hillslope debris flow, taking five indexes as follow : the shape index of ditch, the mean value of greatest precipitation within 24 hours, the developing degree of unstable mass, the mean depth of loose " accumulated clay and the rate of plant cover, applying fuzzy mathematics, the paper designs a suit of scheme about judging hillslope data

    第三部分，依據系統的觀點，全面兼顧了山坡泥石流形成的各種條件，選取溝谷縱剖面形態指數、最大24小時暴雨均值、不良地質體發育程度、鬆散堆積層平均厚度和植被覆蓋率五個指標，運用模糊數學方法在室內設計出一套山坡泥石流溝與非泥石流溝的判定方案。然後以野外實例數據進行檢驗，結果表明本方案分辯率較高，為84 . 6 ，且偏於安全一側。
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