降水持續期間 的英文怎麼說

中文拼音 [jiàngshuǐchíxùqījiān]
降水持續期間 英文
precipitation duration
  • 降 : 降動詞1. （投降） surrender; capitulate 2. （降伏） subdue; vanquish; tame
  • 水 : 名詞1 （由兩個氫原子和一個氧原子結合而成的液體） water 2 （河流） river 3 （指江、河、湖、海、洋...
  • 持 : 動詞1 （拿著; 握著） hold; grasp 2 （持有; 保持） keep; hold 3 （支持; 保持） support; maintain 4...
  • 續 : Ⅰ形容詞（連接不斷） continuous; successive Ⅱ動詞1 （接在原有的后頭） continue; extend; join 2 （...
  • 期 : 期名詞[書面語]1. （一周年） a full year; anniversary 2. （一整月） a full month
  • 間 : 間Ⅰ名詞1 （中間） between; among 2 （一定的空間或時間里） with a definite time or space 3 （一間...
  • 持續 : 1. （延續） last; continue; sustain 2. （連續地） continued; sustained
  • 期間 : time; period; course; duration; term
  1. By investigation on the relationship between period, quantity, extend of ostrinia furnacalis emergence and meteorological factors in qiqihaer, this paper analyzes the factors which effect on period, quantity, extend of ostrinia furnacalis about annual wave. the beginning time of ostrinia furnacalis pupae emergence depends on average temperature in may and june, weather conditions in july decide whether ostrinia furnacalis pupae finish ahead of time ; the beginning time of eclosion is decided by average lowest temperature and precipitation in may and june, and the end time of eclosion is decided by average lowest temperature in june and july, meantime, the length of time of ostrinia furnacalis eclosion and time of grub emergence influence on the extent of ostrinia furnacalis. an important condition of a great emergence of ostrinia furnacalis is that how temperature matchs humidity, which substantially result in reduction of maize output

    本研究項目通過對齊齊哈爾市玉米螟發生期、發生量、發生程度與氣象條件關系的分析，找出玉米螟發生期、發生量、發生程度年際波動的影響因子： 5 、 6月的平均氣溫決定了玉米螟化蛹開始的早晚， 7月的天氣條件決定玉米螟化蛹是否提前結束； 5 、 6月的平均最低氣溫和降水則決定羽化開始的早晚， 6 、 7月的平均最低氣溫又決定了玉米螟羽化結束的早晚；而玉米螟羽化持續時間的長短和幼蟲發生的早晚影響了玉米螟的發生程度；溫濕條件配合適當與否是促使玉米螟大發生的重要條件，玉米螟大發生又會引起玉米的大幅度減產。
  2. Data used in this work are north pacific ssta, 160 stations precipitation of china, and ncep reanalysis data. main results are as follow : ( 1 ) it is found that a apparent transition of north pacific ssta in later 1970 ' s : eastern and middle - equatorial pacific ssta turns from cold to warm with area extending, and mid - latitude pacific ( west wind drift zone ) turns from warm to cold. during this transition of ssta, different characters also appear in el nino and la nina : before 1976, la nina happens more frequently, and its duration is longer, el nino zone develops from negative ssta in the early stage ; after 1976, el nino happens a little bit frequent and longer with more intensity than before, el nino zone develops from positive ssta in the early stage ; the course of ssta variation has an enso cycle of 2 - 6 years, annual oscillation of 8 - 9 years, and decadal variation of about 22 years

    本文採用1950 - 1999年北太平洋海表溫度（ sst ） 、中國160站夏季降水和ncep再分析的歐亞500hpa高度場等資料，利用eof 、 svd 、小波分析、合成分析和相關分析等方法，在分析北太平洋海溫時空分佈特徵的基礎上，著重探討了海溫異常及其年代際變化對我國東部降水的影響，並對降水、高度場和海溫三者之間的關系進行了分析，以試圖尋找三者異常之間可能的聯系，主要結論如下： （ 1 ） 1976年前後，北太平洋海溫經歷了一次明顯的轉變，赤道中、東太平洋厄爾尼諾海區由冷轉暖，暖水范圍增大，中緯度西風漂流區海溫由暖轉冷；在這樣的年代際背景下，厄爾尼諾、拉尼娜事件在不同的時期也有不同的特徵：在76年前，拉尼娜事件發生頻率高，持續時間長，事件起始於負海溫距平；而76年後，則是厄爾尼諾事件發生頻率略高，持續時間長，強度增大，事件起始於正海溫距平。
  3. A durative heavy rainfall process occurred on the middle and lower reaches of yangtze river in lat junl999. lt was just during the period of the operation of hubex experiment which provided a great deal of intensive rainfall data and upper - air sounding data. so it is a good chance for us to do research on the mei - yu front and low

    1999年6月下旬在長江中下游出現了梅雨期的持續性暴雨，並且正值hubex試驗期間，獲得了很多加密觀測降水及探空資料，為我們提供了良好的研究梅雨鋒和低渦的機會。
  4. In this study, we use the survey data of family income and expenditure from 1976 to 1994, conducted by dgbas, to calculate these indexes and their money metric measures

    在觀察期間里，本文發現源自家戶消費支出的社會福利水準持續地在提升，表示福利分配的絕對不均數據亦是在擴大中，然而表示相對不均的數據卻呈下降走勢。
  5. During the lasting course of type e, 850hpa, 500hpa and 200hpa wind field is obviously different from that during the lasting course of type c. the same is true of the precipitation deviation distribution of china, and during type e course the monthly precipitation deviation is positive over the yangtse river and huaihe river basin and negative over north china. the situation of type c is opposite. the result is mainly to reflect the situation in june

    E 、 c型持續過程期間， 850hpa 、 500hpa 、 200hpa風場存在明顯差異。我國降水量距平分佈也有明顯差異， e型過程江淮流域月降水量為正距平，華北為負距平， c型則相反，而這個結果主要是反映了6月份的情況。
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