annual amount of precipitation 中文意思是什麼

annual amount of precipitation 解釋
年降水量
  • annual : adj. 1. 每年的；年度的；一年（一次）的。2. （植物）一年一生的，一季生的。n. 1. 一年生[一季生]植物。2. 年刊，年報，年鑒。adv. -ly 年年，每年。
  • amount : vi. 1. 總計，共計，合計 （to）。2. 相當于，等於。3. 成為 （to）。n. 1. 總和，總額。2. 數值，量，金額。3. 結果，效果；要旨。
  • of : OF ＝Old French 古法語。
  • 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。
  1. The precipitation frequencies is analysed according to 1956 ~ 2000 years of rainfall record series in baoding area. the features of distribution of rainfall are detailed evaluated. firstly, the distribution of monthly precipitation is not even. for instance. the annual rainfall amount is about 548mm in whole year, about 80 % of them in summer season. secondly, yearly variation of rainfall is greater. thirdly, the abundant years usually are followed by short years, but the important changes have taken place in the last decades. before 70 ' s the abundant years took the dominant position, from the 70 ' s to the middle of 80 ' s the short years took place more frequently than ever. after the later of 80 ' s, the short years hold the main position. the above knowledge is instructive for guiding the rainwater resources effective utilization

    本文利用1956 2000年保定市的長系列降雨資料，對保定市降水量進行了頻率分析、年內變化分析和多年變化分析，明確了保定市降水量年內、年際間的變化情況：保定市降水量年內分配不均，汛期（ 6 - 9月）占年降水量的81 。保定市降水量年際間變化大，豐水年和枯水年交替發生， 70年代以前以豐水年段為主； 70年代到80年代前期降水量豐枯交替頻繁，總的接近於枯水年段； 80年代後期至今以枯水年段為主。這種降水分佈規律對農業生產雨水資源的高效利用具有重要的指導意義。
  2. Results from weather monitoring stations from the area showed that precipitation in the two months accounted for 37. 70 % total annual rainfall during the year under review and a significant positive correlation between the rainfall erosivity and rainfall intensity was found, which indicated that the erosive ability of rainfall could be better expressed by its intensity than the total amount of rain

    2001年研究區降雨量和降雨侵蝕力均為6 、 8月較大，其中6 、 8月降雨量為全年的37 . 70 ；降雨侵蝕力與可產生侵蝕雨量為極顯著正相關，可侵蝕降雨量比降雨量能更好地表示降雨的侵蝕能力。
  3. Aiming at illustrating how the regional evaporation capacity was affected by human activities, this paper, by adopting statistics method, analyzed the materials covering fifteen evapotranspiration sites in chao lake valley spanning twentity years from 1981 to 2000, and then explored the relationship between the features of spatial distribution of evapotranspiration and relief, temperature, wind velocity, the amount of precipitation and other factors, as well as on the characteristics of evapotranspiration variation within a year and the trend of its annual changes

    採用了統計學方法，對巢湖流域15個蒸發點20年（ 1981 - 2000年）的資料進行了分析，初步探討了巢湖流域的蒸發量空間分佈特徵與地勢、氣溫、風速、降水量等因子的關系，以及蒸發量在1年內的變化特徵和年際變化趨勢，試圖說明研究時段內人類活動對區域蒸發量的影響。
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