- 更多网络例句与降雨面积相关的网络例句 [注:此内容来源于网络,仅供参考]
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Since 1992, the Russian company Elate Intelligence Technologies, Inc. has demonstrated its ability to radio-control rainfall on demand over an area of 200 square miles.
自1992年以来,俄罗斯公司elate情报技术,公司已表明,它有能力的无线电控制降雨对需求的面积200平方英里。
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The erosion of even-distributed type rainfall results in waveform hydrograph of sediment flow with low concentration and increases with the area of watershed.
均匀型降雨侵蚀下,径流含沙量时间曲线表现为低含沙量的波浪起伏形,并且,随流域面积的增加,次降雨平均含沙量增加
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Floor of entire county total ground accumulates 4885 square kilometer, climate characteristic is spring dry sand blown by wind is much, the summer is short rainfall is little, year average air temperature 2.5 ℃, fall 350mm is controlled, frost-free period is controlled 110 days, it is typical dry farming county, long-term since, because the ploughshare type of follow tradition plows cultivation, a large number of the earth's surface are completely bare, monsoon comes, soil land of medium fine sanded face is reached organic blow character, cause edaphic sand to change, fertility drops, raise of sand and dust, year answer a year, change dene serious with each passing day, cause aggravation of zoology environment year after year, the agriculture that also decided place produces a condition, groundwater source is not worth badly, 10 years of 9 drought, extensive cultivation, crop yield is low and flabby.
全县总土地面积4885平方公里,气候特色为春季干燥风沙多,夏季短促降雨少,年平均气温2.5℃,降水量350mm左右,无霜期110天左右,是典型的旱作农业县,长期以来,由于沿袭传统的铧式犁耕作,大量地表完全裸露,季风来临,将土壤中的细沙面土及有机质刮走,造成土壤沙化、肥力下降,沙尘扬起,年复一年,沙化日趋严重,造成生态环境逐年恶化,也决定了当地的农业生产条件,地下水源严重不足,十年九旱,广种薄收,作物产量低而不稳。
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The first step is selecting a rain gauge as rainfall center by taking turns and adding the nearest rain gauge step by step to estimate the rainfall ratio relation of the same time with respect to the different distance separately. The last step is utilizing Weibull function can inquire into the return periods. Then, the ARF of Tamshui River basin is established.
研究中,先以某个雨量站当成点降雨中心,并逐次纳入邻近雨量站,即可分别得到不同距离下、同时间之雨量比值关系,依序置换不同雨量站为中心进行相同之分析,并利用威伯点绘法,进一步推求重现期距,即可建立研究区域之不同重现期距、不同延时与面积递减关系之ARF曲线。
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The frist step is selecting any gage that building in the river basin as rainfall center, and adding the nearest rain gauge step by step to calculate the point and areal rainfall for different size of area. Using different gage that in the river basin as rainfall center can get the result of different case.
研究中,先以某个雨量站当成点降雨中心,并逐次纳入邻近雨量站,即可分别得到不同面积下之点降雨及区域面积降雨,依序置换不同雨量站为中心进行相同之分析,即可得到所有可能组合案例之分析结果,利用Gamma分布可进一步推求不同重现期距之点降雨及区域面积雨量,即可建立研究区域之ARF。
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The former we use the method of rainfall frequency of maximal 3-day waterlog area, the latter we use the method of actual year series.
前者采用最大3日降雨频率与灾害面积曲线法;后者采用实际年系列法。
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The effect of Zea mays and Bromus riparius on soil and water loss were studied,the experiment was conducted to plant crop and grass in runoff-plots on the 15 degree slope naturally,the bare slop is CK,then the runoff and soil erosion amount and the biological characteristics of corn and meadow bromes termly were measured,and difference of soil and water loss prevention effect on the slop land were determined.The results showed that soil and water loss became less after both corn and meadow brome planting.And the leaf area and the coverage of meadow brome higher than corn,which was benefit for less soil and water loss at the rain season early.Meanwhile,roots of corn and meadow brome mainly distributed in 0-10 cm soil layer,and the root biomass of meadow brome was 2.88 times than that of corn.
试验在自然降雨条件下,在15°坡地设置作物与牧草径流试验小区,以裸地为对照,在每次降雨之后用全深剖面采样器取样,测量其径流量和土壤侵蚀量,定期测定玉米和草地雀麦的生物学特性,研究玉米与草地雀麦生物学特性变化及其坡地水土流失防治效果的差异,探索植物种植对坡地水土流失的主要影响因素,结果表明:种植玉米与草地雀麦,对坡地水土流失均有一定防治作用,但是,与玉米相比,草地雀麦的叶面积指数和覆盖度可在雨季前达到较高水平,有利于早期坡地水土流失防治。
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The decrease of precipitation has the problem of wetland loses and xerophytes invasion even worse.
因为连年降雨的减少导致了北京市湿地面积的下降和旱生植物的入侵问题日益加重。
- 更多网络解释与降雨面积相关的网络解释 [注:此内容来源于网络,仅供参考]
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rain barrel effect:过补偿线路上的响应
rain area 降雨面积,雨区 | rain barrel effect 过补偿线路上的响应 | rain belt 雨带,雨区
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arc-over test:湿飞弧试验
~ and snow mixed 雨夹雪 | ~ arc-over test 湿飞弧试验 | ~-area 降雨面积
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rain area:降雨面积,雨区
rain and snow mixed ==> 雨夹雪 | rain area ==> 降雨面积,雨区 | rain barrel effect ==> 过补偿线路上的响应